Log EHLO response on getting conn-close response for HELO. Bug 1832

[users/heiko/exim.git] / doc / doc-docbook / spec.xfpt

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 6185536b91e8a48be715f8cef306eb93f5fda6d7..4ebeaa0c605fc43af98bfec117622eb9b68ef274 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -45,14 +45,14 @@
 . Update the Copyright year (only) when changing content.
 . /////////////////////////////////////////////////////////////////////////////
 
 . Update the Copyright year (only) when changing content.
 . /////////////////////////////////////////////////////////////////////////////
 

-.set previousversion "4.86"
+.set previousversion "4.87"

 .include ./local_params
 
 .set ACL "access control lists (ACLs)"
 .set I   "    "
 
 .macro copyyear
 .include ./local_params
 
 .set ACL "access control lists (ACLs)"
 .set I   "    "
 
 .macro copyyear

-2015
+2016

 .endmacro
 
 . /////////////////////////////////////////////////////////////////////////////
 .endmacro
 
 . /////////////////////////////////////////////////////////////////////////////


@@ -2627,6 +2627,8 @@ users to set envelope senders.
 
 .cindex "&'From:'& header line"
 .cindex "&'Sender:'& header line"
 
 .cindex "&'From:'& header line"
 .cindex "&'Sender:'& header line"

+.cindex "header lines" "From:"
+.cindex "header lines" "Sender:"

 For a trusted user, there is never any check on the contents of the &'From:'&
 header line, and a &'Sender:'& line is never added. Furthermore, any existing
 &'Sender:'& line in incoming local (non-TCP/IP) messages is not removed.
 For a trusted user, there is never any check on the contents of the &'From:'&
 header line, and a &'Sender:'& line is never added. Furthermore, any existing
 &'Sender:'& line in incoming local (non-TCP/IP) messages is not removed.


@@ -3049,7 +3051,8 @@ trusted user for the sender of a message to be set in this way.
 .oindex "&%-bmalware%&"
 .cindex "testing", "malware"
 .cindex "malware scan test"
 .oindex "&%-bmalware%&"
 .cindex "testing", "malware"
 .cindex "malware scan test"

-This debugging option causes Exim to scan the given file,
+This debugging option causes Exim to scan the given file or directory
+(depending on the used scanner interface),

 using the malware scanning framework.  The option of &%av_scanner%& influences
 this option, so if &%av_scanner%&'s value is dependent upon an expansion then
 the expansion should have defaults which apply to this invocation.  ACLs are
 using the malware scanning framework.  The option of &%av_scanner%& influences
 this option, so if &%av_scanner%&'s value is dependent upon an expansion then
 the expansion should have defaults which apply to this invocation.  ACLs are


@@ -3557,9 +3560,7 @@ example:
 exim '-D ABC = something' ...
 .endd
 &%-D%& may be repeated up to 10 times on a command line.
 exim '-D ABC = something' ...
 .endd
 &%-D%& may be repeated up to 10 times on a command line.

-.new

 Only macro names up to 22 letters long can be set.
 Only macro names up to 22 letters long can be set.

-.wen

 
 
 .vitem &%-d%&<&'debug&~options'&>
 
 
 .vitem &%-d%&<&'debug&~options'&>


@@ -3826,6 +3827,14 @@ This option is not intended for use by external callers. It is used internally
 by Exim in conjunction with the &%-MC%& option. It signifies that the
 remote host supports the ESMTP &_DSN_& extension.
 
 by Exim in conjunction with the &%-MC%& option. It signifies that the
 remote host supports the ESMTP &_DSN_& extension.
 

+.new
+.vitem &%-MCG%&
+.oindex "&%-MCG%&"
+This option is not intended for use by external callers. It is used internally
+by Exim in conjunction with the &%-MC%& option. It signifies that an
+alternate queue is used, named by the following option.
+.wen
+

 .vitem &%-MCP%&
 .oindex "&%-MCP%&"
 This option is not intended for use by external callers. It is used internally
 .vitem &%-MCP%&
 .oindex "&%-MCP%&"
 This option is not intended for use by external callers. It is used internally


@@ -4372,7 +4381,10 @@ relax this restriction (and also the same requirement for the &%-M%&, &%-R%&,
 and &%-S%& options).
 
 .cindex "queue runner" "description of operation"
 and &%-S%& options).
 
 .cindex "queue runner" "description of operation"

-The &%-q%& option starts one queue runner process. This scans the queue of
+.new
+If other commandline options do not specify an action,
+.wen
+the &%-q%& option starts one queue runner process. This scans the queue of

 waiting messages, and runs a delivery process for each one in turn. It waits
 for each delivery process to finish before starting the next one. A delivery
 process may not actually do any deliveries if the retry times for the addresses
 waiting messages, and runs a delivery process for each one in turn. It waits
 for each delivery process to finish before starting the next one. A delivery
 process may not actually do any deliveries if the retry times for the addresses


@@ -4457,8 +4469,29 @@ The &'l'& (the letter &"ell"&) flag specifies that only local deliveries are to
 be done. If a message requires any remote deliveries, it remains on the queue
 for later delivery.
 
 be done. If a message requires any remote deliveries, it remains on the queue
 for later delivery.
 

-.vitem &%-q%&<&'qflags'&>&~<&'start&~id'&>&~<&'end&~id'&>
+.new
+.vitem &%-q[q][i][f[f]][l][G<name>[/<time>]]]%&
+.oindex "&%-qG%&"
+.cindex queue named
+.cindex "named queues"

 .cindex "queue" "delivering specific messages"
 .cindex "queue" "delivering specific messages"

+If the &'G'& flag and a name is present, the queue runner operates on the
+queue with the given name rather than the default queue.
+The name should not contain a &'/'& character.
+For a periodic queue run (see below)
+append to the name a slash and a time value.
+
+If other commandline options speicify an action, a &'-qG<name>'& option
+will specify a queue to operate on.
+For example:
+.code
+exim -bp -qGquarantine
+mailq -qGquarantime
+exim -qGoffpeak -Rf @special.domain.example
+.endd
+.wen
+
+.vitem &%-q%&<&'qflags'&>&~<&'start&~id'&>&~<&'end&~id'&>

 When scanning the queue, Exim can be made to skip over messages whose ids are
 lexically less than a given value by following the &%-q%& option with a
 starting message id. For example:
 When scanning the queue, Exim can be made to skip over messages whose ids are
 lexically less than a given value by following the &%-q%& option with a
 starting message id. For example:


@@ -5103,7 +5136,11 @@ with the characters &"0x"&, in which case the remainder is interpreted as a
 hexadecimal number.
 
 If an integer value is followed by the letter K, it is multiplied by 1024; if
 hexadecimal number.
 
 If an integer value is followed by the letter K, it is multiplied by 1024; if

-it is followed by the letter M, it is multiplied by 1024x1024. When the values
+it is followed by the letter M, it is multiplied by 1024x1024;
+.new
+if by the letter G, 1024x1024x1024.
+.wen
+When the values

 of integer option settings are output, values which are an exact multiple of
 1024 or 1024x1024 are sometimes, but not always, printed using the letters K
 and M. The printing style is independent of the actual input format that was
 of integer option settings are output, values which are an exact multiple of
 1024 or 1024x1024 are sometimes, but not always, printed using the letters K
 and M. The printing style is independent of the actual input format that was


@@ -6149,7 +6186,8 @@ errors:
 This causes any temporarily failing address to be retried every 15 minutes for
 2 hours, then at intervals starting at one hour and increasing by a factor of
 1.5 until 16 hours have passed, then every 6 hours up to 4 days. If an address
 This causes any temporarily failing address to be retried every 15 minutes for
 2 hours, then at intervals starting at one hour and increasing by a factor of
 1.5 until 16 hours have passed, then every 6 hours up to 4 days. If an address

-is not delivered after 4 days of temporary failure, it is bounced.
+is not delivered after 4 days of temporary failure, it is bounced. The time is
+measured from first failure, not from the time the message was received.

 
 If the retry section is removed from the configuration, or is empty (that is,
 if no retry rules are defined), Exim will not retry deliveries. This turns
 
 If the retry section is removed from the configuration, or is empty (that is,
 if no retry rules are defined), Exim will not retry deliveries. This turns


@@ -6611,7 +6649,7 @@ lookup types support only literal keys.
 .endlist ilist
 
 
 .endlist ilist
 
 

-.section "Query-style lookup types" "SECID62"
+.section "Query-style lookup types" "SECTquerystylelookups"

 .cindex "lookup" "query-style types"
 .cindex "query-style lookup" "list of types"
 The supported query-style lookup types are listed below. Further details about
 .cindex "lookup" "query-style types"
 .cindex "query-style lookup" "list of types"
 The supported query-style lookup types are listed below. Further details about


@@ -6669,12 +6707,10 @@ password value. For example:
 PostgreSQL database. See section &<<SECTsql>>&.
 
 .next
 PostgreSQL database. See section &<<SECTsql>>&.
 
 .next

-.new

 .cindex "Redis lookup type"
 .cindex lookup Redis
 &(redis)&: The format of the query is an SQL statement that is passed to a
 Redis database. See section &<<SECTsql>>&.
 .cindex "Redis lookup type"
 .cindex lookup Redis
 &(redis)&: The format of the query is an SQL statement that is passed to a
 Redis database. See section &<<SECTsql>>&.

-.wen

 
 .next
 .cindex "sqlite lookup type"
 
 .next
 .cindex "sqlite lookup type"


@@ -7052,14 +7088,12 @@ Retries for the dnsdb lookup can be controlled by a retry modifier.
 The form if &"retry_VAL"& where VAL is an integer.
 The default count is set by the main configuration option &%dns_retry%&.
 
 The form if &"retry_VAL"& where VAL is an integer.
 The default count is set by the main configuration option &%dns_retry%&.
 

-.new

 .cindex cacheing "of dns lookup"
 .cindex TTL "of dns lookup"
 .cindex DNS TTL
 Dnsdb lookup results are cached within a single process (and its children).
 The cache entry lifetime is limited to the smallest time-to-live (TTL)
 value of the set of returned DNS records.
 .cindex cacheing "of dns lookup"
 .cindex TTL "of dns lookup"
 .cindex DNS TTL
 Dnsdb lookup results are cached within a single process (and its children).
 The cache entry lifetime is limited to the smallest time-to-live (TTL)
 value of the set of returned DNS records.

-.wen

 
 
 .section "Pseudo dnsdb record types" "SECID66"
 
 
 .section "Pseudo dnsdb record types" "SECID66"


@@ -7612,7 +7646,6 @@ a query is successfully processed. The result of a query may be that no data is
 found, but that is still a successful query. In other words, the list of
 servers provides a backup facility, not a list of different places to look.
 
 found, but that is still a successful query. In other words, the list of
 servers provides a backup facility, not a list of different places to look.
 

-.new

 For Redis the global option need not be specified if all queries contain their
 own server information &-- see section &<<SECTspeserque>>&.
 If specified, the option must be set to a colon-separated list of server
 For Redis the global option need not be specified if all queries contain their
 own server information &-- see section &<<SECTspeserque>>&.
 If specified, the option must be set to a colon-separated list of server


@@ -7628,9 +7661,7 @@ The database number is optional; if present that number is selected in the backe
 .next
 The password is optional; if present it is used to authenticate to the backend
 .endlist
 .next
 The password is optional; if present it is used to authenticate to the backend
 .endlist

-.wen

 
 

-.new

 The &%quote_mysql%&, &%quote_pgsql%&, and &%quote_oracle%& expansion operators
 convert newline, tab, carriage return, and backspace to \n, \t, \r, and \b
 respectively, and the characters single-quote, double-quote, and backslash
 The &%quote_mysql%&, &%quote_pgsql%&, and &%quote_oracle%& expansion operators
 convert newline, tab, carriage return, and backspace to \n, \t, \r, and \b
 respectively, and the characters single-quote, double-quote, and backslash


@@ -7638,7 +7669,6 @@ itself are escaped with backslashes.
 
 The &%quote_redis%& expansion operator
 escapes whitespace and backslash characters with a backslash.
 
 The &%quote_redis%& expansion operator
 escapes whitespace and backslash characters with a backslash.

-.wen

 
 .section "Specifying the server in the query" "SECTspeserque"
 For MySQL, PostgreSQL and Redis lookups (but not currently for Oracle and InterBase),
 
 .section "Specifying the server in the query" "SECTspeserque"
 For MySQL, PostgreSQL and Redis lookups (but not currently for Oracle and InterBase),


@@ -7685,10 +7715,8 @@ ${lookup pgsql{servers=master/db/name/pw; UPDATE ...} }
 For MySQL, an empty host name or the use of &"localhost"& in &%mysql_servers%&
 causes a connection to the server on the local host by means of a Unix domain
 socket. An alternate socket can be specified in parentheses.
 For MySQL, an empty host name or the use of &"localhost"& in &%mysql_servers%&
 causes a connection to the server on the local host by means of a Unix domain
 socket. An alternate socket can be specified in parentheses.

-.new

 An option group name for MySQL option files can be specified in square brackets;
 the default value is &"exim"&.
 An option group name for MySQL option files can be specified in square brackets;
 the default value is &"exim"&.

-.wen

 The full syntax of each item in &%mysql_servers%& is:
 .display
 <&'hostname'&>::<&'port'&>(<&'socket name'&>)[<&'option group'&>]/&&&
 The full syntax of each item in &%mysql_servers%& is:
 .display
 <&'hostname'&>::<&'port'&>(<&'socket name'&>)[<&'option group'&>]/&&&


@@ -7785,7 +7813,14 @@ domain, host, address and local part lists.
 
 .section "Expansion of lists" "SECTlistexpand"
 .cindex "expansion" "of lists"
 
 .section "Expansion of lists" "SECTlistexpand"
 .cindex "expansion" "of lists"

-Each list is expanded as a single string before it is used. The result of
+Each list is expanded as a single string before it is used.
+
+.new
+&'Exception: the router headers_remove option, where list-item
+splitting is done before string-expansion.'&
+.wen
+
+The result of

 expansion must be a list, possibly containing empty items, which is split up
 into separate items for matching. By default, colon is the separator character,
 but this can be varied if necessary. See sections &<<SECTlistconstruct>>& and
 expansion must be a list, possibly containing empty items, which is split up
 into separate items for matching. By default, colon is the separator character,
 but this can be varied if necessary. See sections &<<SECTlistconstruct>>& and


@@ -9184,8 +9219,8 @@ The environment is adjusted by the &%keep_environment%& and
 .cindex "&%extract%&" "substrings by key"
 The key and <&'string1'&> are first expanded separately. Leading and trailing
 white space is removed from the key (but not from any of the strings). The key
 .cindex "&%extract%&" "substrings by key"
 The key and <&'string1'&> are first expanded separately. Leading and trailing
 white space is removed from the key (but not from any of the strings). The key

-must not consist entirely of digits. The expanded <&'string1'&> must be of the
-form:
+must not be empty and must not consist entirely of digits.
+The expanded <&'string1'&> must be of the form:

 .display
 <&'key1'&> = <&'value1'&>  <&'key2'&> = <&'value2'&> ...
 .endd
 .display
 <&'key1'&> = <&'value1'&>  <&'key2'&> = <&'value2'&> ...
 .endd


@@ -9459,14 +9494,12 @@ condition = ${if >{$acl_m4}{3}}
 
 
 
 
 
 

-.new

 .vitem &*${imapfolder{*&<&'foldername'&>&*}}*&
 .cindex expansion "imap folder"
 .cindex "&%imapfolder%& expansion item"
 This item converts a (possibly multilevel, or with non-ASCII characters)
 folder specification to a Maildir name for filesystem use.
 For information on internationalisation support see &<<SECTi18nMDA>>&.
 .vitem &*${imapfolder{*&<&'foldername'&>&*}}*&
 .cindex expansion "imap folder"
 .cindex "&%imapfolder%& expansion item"
 This item converts a (possibly multilevel, or with non-ASCII characters)
 folder specification to a Maildir name for filesystem use.
 For information on internationalisation support see &<<SECTi18nMDA>>&.

-.wen

 
 
 
 
 
 


@@ -10063,6 +10096,21 @@ Last:user@example.com
 user@example.com
 .endd
 
 user@example.com
 .endd
 

+.new
+.vitem &*${base32:*&<&'digits'&>&*}*&
+.cindex "&%base32%& expansion item"
+.cindex "expansion" "conversion to base 32"
+The string must consist entirely of decimal digits. The number is converted to
+base 32 and output as a (empty, for zero) string of characters.
+Only lowercase letters are used.
+
+.vitem &*${base32d:*&<&'base-32&~digits'&>&*}*&
+.cindex "&%base32d%& expansion item"
+.cindex "expansion" "conversion to base 32"
+The string must consist entirely of base-32 digits.
+The number is converted to decimal and output as a string.
+.wen
+

 .vitem &*${base62:*&<&'digits'&>&*}*&
 .cindex "&%base62%& expansion item"
 .cindex "expansion" "conversion to base 62"
 .vitem &*${base62:*&<&'digits'&>&*}*&
 .cindex "&%base62%& expansion item"
 .cindex "expansion" "conversion to base 62"


@@ -10081,7 +10129,6 @@ environments where Exim uses base 36 instead of base 62 for its message
 identifiers, base-36 digits. The number is converted to decimal and output as a
 string.
 
 identifiers, base-36 digits. The number is converted to decimal and output as a
 string.
 

-.new

 .vitem &*${base64:*&<&'string'&>&*}*&
 .cindex "expansion" "base64 encoding"
 .cindex "base64 encoding" "in string expansion"
 .vitem &*${base64:*&<&'string'&>&*}*&
 .cindex "expansion" "base64 encoding"
 .cindex "base64 encoding" "in string expansion"


@@ -10098,7 +10145,6 @@ returns the base64 encoding of the DER form of the certificate.
 .cindex "base64 decoding" "in string expansion"
 .cindex "&%base64d%& expansion item"
 This operator converts a base64-encoded string into the un-coded form.
 .cindex "base64 decoding" "in string expansion"
 .cindex "&%base64d%& expansion item"
 This operator converts a base64-encoded string into the un-coded form.

-.wen

 
 
 .vitem &*${domain:*&<&'string'&>&*}*&
 
 
 .vitem &*${domain:*&<&'string'&>&*}*&


@@ -10116,6 +10162,15 @@ escape sequences starting with a backslash. Whether characters with the most
 significant bit set (so-called &"8-bit characters"&) count as printing or not
 is controlled by the &%print_topbitchars%& option.
 
 significant bit set (so-called &"8-bit characters"&) count as printing or not
 is controlled by the &%print_topbitchars%& option.
 

+.new
+.vitem &*${escape8bit:*&<&'string'&>&*}*&
+.cindex "expansion" "escaping 8-bit characters"
+.cindex "&%escape8bit%& expansion item"
+If the string contains and characters with the most significant bit set,
+they are converted to escape sequences starting with a backslash.
+Backslashes and DEL characters are also converted.
+.wen
+

 
 .vitem &*${eval:*&<&'string'&>&*}*&&~and&~&*${eval10:*&<&'string'&>&*}*&
 .cindex "expansion" "expression evaluation"
 
 .vitem &*${eval:*&<&'string'&>&*}*&&~and&~&*${eval10:*&<&'string'&>&*}*&
 .cindex "expansion" "expression evaluation"


@@ -10245,7 +10300,6 @@ as is, and other byte values are converted to &`\xNN`&, for example a
 byte value 127 is converted to &`\x7f`&.
 
 
 byte value 127 is converted to &`\x7f`&.
 
 

-.new

 .vitem &*${ipv6denorm:*&<&'string'&>&*}*&
 .cindex "&%ipv6denorm%& expansion item"
 .cindex "IP address" normalisation
 .vitem &*${ipv6denorm:*&<&'string'&>&*}*&
 .cindex "&%ipv6denorm%& expansion item"
 .cindex "IP address" normalisation


@@ -10263,7 +10317,6 @@ Leading zeroes of groups are omitted, and the longest
 set of zero-valued groups is replaced with a double colon.
 A trailing ipv4-style dotted-decimal set is converted to hex.
 Pure IPv4 addresses are converted to IPv4-mapped IPv6.
 set of zero-valued groups is replaced with a double colon.
 A trailing ipv4-style dotted-decimal set is converted to hex.
 Pure IPv4 addresses are converted to IPv4-mapped IPv6.

-.wen

 
 
 .vitem &*${lc:*&<&'string'&>&*}*&
 
 
 .vitem &*${lc:*&<&'string'&>&*}*&


@@ -10491,7 +10544,7 @@ variables or headers inside regular expressions.
 .cindex "SHA-1 hash"
 .cindex "expansion" "SHA-1 hashing"
 .cindex certificate fingerprint
 .cindex "SHA-1 hash"
 .cindex "expansion" "SHA-1 hashing"
 .cindex certificate fingerprint

-.cindex "&%sha2%& expansion item"
+.cindex "&%sha1%& expansion item"

 The &%sha1%& operator computes the SHA-1 hash value of the string, and returns
 it as a 40-digit hexadecimal number, in which any letters are in upper case.
 
 The &%sha1%& operator computes the SHA-1 hash value of the string, and returns
 it as a 40-digit hexadecimal number, in which any letters are in upper case.
 


@@ -10499,16 +10552,38 @@ If the string is a single variable of type certificate,
 returns the SHA-1 hash fingerprint of the certificate.
 
 
 returns the SHA-1 hash fingerprint of the certificate.
 
 

-.vitem &*${sha256:*&<&'certificate'&>&*}*&
+.vitem &*${sha256:*&<&'string'&>&*}*&

 .cindex "SHA-256 hash"
 .cindex certificate fingerprint
 .cindex "expansion" "SHA-256 hashing"
 .cindex "&%sha256%& expansion item"
 .cindex "SHA-256 hash"
 .cindex certificate fingerprint
 .cindex "expansion" "SHA-256 hashing"
 .cindex "&%sha256%& expansion item"

-The &%sha256%& operator computes the SHA-256 hash fingerprint of the
-certificate,
+.new
+The &%sha256%& operator computes the SHA-256 hash value of the string
+and returns
+it as a 64-digit hexadecimal number, in which any letters are in upper case.
+.wen
+
+If the string is a single variable of type certificate,
+returns the SHA-256 hash fingerprint of the certificate.
+
+
+.new
+.vitem &*${sha3:*&<&'string'&>&*}*& &&&
+       &*${sha3_<n>:*&<&'string'&>&*}*&
+.cindex "SHA3 hash"
+.cindex "expansion" "SHA3 hashing"
+.cindex "&%sha3%& expansion item"
+The &%sha3%& operator computes the SHA3-256 hash value of the string

 and returns
 it as a 64-digit hexadecimal number, in which any letters are in upper case.
 and returns
 it as a 64-digit hexadecimal number, in which any letters are in upper case.

-Only arguments which are a single variable of certificate type are supported.
+
+If a number is appended, separated by an underbar, it specifies
+the output length.  Values of 224, 256, 384 and 512 are accepted;
+with 256 being the default.
+
+The &%sha3%& expansion item is only supported if Exim has been
+compiled with GnuTLS 3.5.0 or later.
+.wen

 
 
 .vitem &*${stat:*&<&'string'&>&*}*&
 
 
 .vitem &*${stat:*&<&'string'&>&*}*&


@@ -10531,9 +10606,7 @@ systems for files larger than 2GB.
 
 .vitem &*${str2b64:*&<&'string'&>&*}*&
 .cindex "&%str2b64%& expansion item"
 
 .vitem &*${str2b64:*&<&'string'&>&*}*&
 .cindex "&%str2b64%& expansion item"

-.new

 Now deprecated, a synonym for the &%base64%& expansion operator.
 Now deprecated, a synonym for the &%base64%& expansion operator.

-.wen

 
 
 
 
 
 


@@ -10588,7 +10661,6 @@ This forces the letters in the string into upper-case.
 .cindex "&%utf8clean%& expansion item"
 This replaces any invalid utf-8 sequence in the string by the character &`?`&.
 
 .cindex "&%utf8clean%& expansion item"
 This replaces any invalid utf-8 sequence in the string by the character &`?`&.
 

-.new

 .vitem "&*${utf8_domain_to_alabel:*&<&'string'&>&*}*&" &&&
        "&*${utf8_domain_from_alabel:*&<&'string'&>&*}*&" &&&
        "&*${utf8_localpart_to_alabel:*&<&'string'&>&*}*&" &&&
 .vitem "&*${utf8_domain_to_alabel:*&<&'string'&>&*}*&" &&&
        "&*${utf8_domain_from_alabel:*&<&'string'&>&*}*&" &&&
        "&*${utf8_localpart_to_alabel:*&<&'string'&>&*}*&" &&&


@@ -10603,7 +10675,6 @@ This replaces any invalid utf-8 sequence in the string by the character &`?`&.
 .cindex "&%utf8_localpart_from_alabel%& expansion item"
 These convert EAI mail name components between UTF-8 and a-label forms.
 For information on internationalisation support see &<<SECTi18nMTA>>&.
 .cindex "&%utf8_localpart_from_alabel%& expansion item"
 These convert EAI mail name components between UTF-8 and a-label forms.
 For information on internationalisation support see &<<SECTi18nMTA>>&.

-.wen

 .endlist
 
 
 .endlist
 
 


@@ -11531,18 +11602,6 @@ contain the trailing slash. If &$config_file$& does not contain a slash,
 .vindex "&$config_file$&"
 The name of the main configuration file Exim is using.
 
 .vindex "&$config_file$&"
 The name of the main configuration file Exim is using.
 

-.vitem &$demime_errorlevel$&
-.vindex "&$demime_errorlevel$&"
-This variable is available when Exim is compiled with
-the content-scanning extension and the obsolete &%demime%& condition. For
-details, see section &<<SECTdemimecond>>&.
-
-.vitem &$demime_reason$&
-.vindex "&$demime_reason$&"
-This variable is available when Exim is compiled with the
-content-scanning extension and the obsolete &%demime%& condition. For details,
-see section &<<SECTdemimecond>>&.
-

 .vitem &$dkim_cur_signer$& &&&
        &$dkim_verify_status$& &&&
        &$dkim_verify_reason$& &&&
 .vitem &$dkim_cur_signer$& &&&
        &$dkim_verify_status$& &&&
        &$dkim_verify_reason$& &&&


@@ -11674,12 +11733,6 @@ The first character is a major version number, currently 4.
 Then after a dot, the next group of digits is a minor version number.
 There may be other characters following the minor version.
 
 Then after a dot, the next group of digits is a minor version number.
 There may be other characters following the minor version.
 

-.vitem &$found_extension$&
-.vindex "&$found_extension$&"
-This variable is available when Exim is compiled with the
-content-scanning extension and the obsolete &%demime%& condition. For details,
-see section &<<SECTdemimecond>>&.
-

 .vitem &$header_$&<&'name'&>
 This is not strictly an expansion variable. It is expansion syntax for
 inserting the message header line with the given name. Note that the name must
 .vitem &$header_$&<&'name'&>
 This is not strictly an expansion variable. It is expansion syntax for
 inserting the message header line with the given name. Note that the name must


@@ -12180,22 +12233,20 @@ qualified host name. See also &$smtp_active_hostname$&.
 
 
 .new
 
 
 .new

-.vitem &$proxy_host_address$& &&&
-       &$proxy_host_port$& &&&
-       &$proxy_target_address$& &&&
-       &$proxy_target_port$& &&&
+.vitem &$proxy_external_address$& &&&
+       &$proxy_external_port$& &&&
+       &$proxy_local_address$& &&&
+       &$proxy_local_port$& &&&

        &$proxy_session$&
 These variables are only available when built with Proxy Protocol
 or Socks5 support
 For details see chapter &<<SECTproxyInbound>>&.
 .wen
 
        &$proxy_session$&
 These variables are only available when built with Proxy Protocol
 or Socks5 support
 For details see chapter &<<SECTproxyInbound>>&.
 .wen
 

-.new

 .vitem &$prdr_requested$&
 .cindex "PRDR" "variable for"
 This variable is set to &"yes"& if PRDR was requested by the client for the
 current message, otherwise &"no"&.
 .vitem &$prdr_requested$&
 .cindex "PRDR" "variable for"
 This variable is set to &"yes"& if PRDR was requested by the client for the
 current message, otherwise &"no"&.

-.wen

 
 .vitem &$prvscheck_address$&
 This variable is used in conjunction with the &%prvscheck%& expansion item,
 
 .vitem &$prvscheck_address$&
 This variable is used in conjunction with the &%prvscheck%& expansion item,


@@ -12221,6 +12272,14 @@ The value set for the &%qualify_domain%& option in the configuration file.
 The value set for the &%qualify_recipient%& option in the configuration file,
 or if not set, the value of &$qualify_domain$&.
 
 The value set for the &%qualify_recipient%& option in the configuration file,
 or if not set, the value of &$qualify_domain$&.
 

+.new
+.vitem &$queue_name$&
+.vindex &$queue_name$&
+.cindex "named queues"
+.cindex queues named
+The name of the spool queue in use; empty for the default queue.
+.wen
+

 .vitem &$rcpt_count$&
 .vindex "&$rcpt_count$&"
 When a message is being received by SMTP, this variable contains the number of
 .vitem &$rcpt_count$&
 .vindex "&$rcpt_count$&"
 When a message is being received by SMTP, this variable contains the number of


@@ -12809,7 +12868,7 @@ When a message is received from a remote host over an encrypted SMTP
 connection, this variable is set to the cipher suite that was negotiated, for
 example DES-CBC3-SHA. In other circumstances, in particular, for message
 received over unencrypted connections, the variable is empty. Testing
 connection, this variable is set to the cipher suite that was negotiated, for
 example DES-CBC3-SHA. In other circumstances, in particular, for message
 received over unencrypted connections, the variable is empty. Testing

-&$tls_cipher$& for emptiness is one way of distinguishing between encrypted and
+&$tls_in_cipher$& for emptiness is one way of distinguishing between encrypted and

 non-encrypted connections during ACL processing.
 
 The deprecated &$tls_cipher$& variable is the same as &$tls_in_cipher$& during message reception,
 non-encrypted connections during ACL processing.
 
 The deprecated &$tls_cipher$& variable is the same as &$tls_in_cipher$& during message reception,


@@ -12944,8 +13003,7 @@ or external command, as described above. It is also used during a
 
 .vitem &$verify_mode$&
 .vindex "&$verify_mode$&"
 
 .vitem &$verify_mode$&
 .vindex "&$verify_mode$&"

-While a router or transport is being run in verify mode
-or for cutthrough delivery,
+While a router or transport is being run in verify mode or for cutthrough delivery,

 contains "S" for sender-verification or "R" for recipient-verification.
 Otherwise, empty.
 
 contains "S" for sender-verification or "R" for recipient-verification.
 Otherwise, empty.
 


@@ -13021,6 +13079,17 @@ overriding the setting of &%perl_at_start%&.
 There is also a command line option &%-pd%& (for delay) which suppresses the
 initial startup, even if &%perl_at_start%& is set.
 
 There is also a command line option &%-pd%& (for delay) which suppresses the
 initial startup, even if &%perl_at_start%& is set.
 

+.new
+.ilist
+.oindex "&%perl_taintmode%&"
+.cindex "Perl" "taintmode"
+To provide more security executing Perl code via the embedded Perl
+interpeter, the &%perl_taintmode%& option can be set. This enables the
+taint mode of the Perl interpreter. You are encouraged to set this
+option to a true value. To avoid breaking existing installations, it
+defaults to false.
+.wen
+

 
 .section "Calling Perl subroutines" "SECID86"
 When the configuration file includes a &%perl_startup%& option you can make use
 
 .section "Calling Perl subroutines" "SECID86"
 When the configuration file includes a &%perl_startup%& option you can make use


@@ -13549,6 +13618,7 @@ listed in more than one group.
 .table2
 .row &%perl_at_start%&               "always start the interpreter"
 .row &%perl_startup%&                "code to obey when starting Perl"
 .table2
 .row &%perl_at_start%&               "always start the interpreter"
 .row &%perl_startup%&                "code to obey when starting Perl"

+.row &%perl_taintmode%&                     "enable taint mode in Perl"

 .endtable
 
 
 .endtable
 
 


@@ -13760,6 +13830,7 @@ See also the &'Policy controls'& section above.
 .table2
 .row &%accept_8bitmime%&             "advertise 8BITMIME"
 .row &%auth_advertise_hosts%&        "advertise AUTH to these hosts"
 .table2
 .row &%accept_8bitmime%&             "advertise 8BITMIME"
 .row &%auth_advertise_hosts%&        "advertise AUTH to these hosts"

+.row &%chunking_advertise_hosts%&    "advertise CHUNKING to these hosts"

 .row &%dsn_advertise_hosts%&         "advertise DSN extensions to these hosts"
 .row &%ignore_fromline_hosts%&       "allow &""From ""& from these hosts"
 .row &%ignore_fromline_local%&       "allow &""From ""& from local SMTP"
 .row &%dsn_advertise_hosts%&         "advertise DSN extensions to these hosts"
 .row &%ignore_fromline_hosts%&       "allow &""From ""& from these hosts"
 .row &%ignore_fromline_local%&       "allow &""From ""& from local SMTP"


@@ -14001,13 +14072,11 @@ received. See chapter &<<CHAPACL>>& for further details.
 This option defines the ACL that is run when an SMTP VRFY command is
 received. See chapter &<<CHAPACL>>& for further details.
 
 This option defines the ACL that is run when an SMTP VRFY command is
 received. See chapter &<<CHAPACL>>& for further details.
 

-.new

 .option add_environment main "string list" empty
 .cindex "environment" "set values"
 This option allows to set individual environment variables that the
 currently linked libraries and programs in child processes use.
 See &<<SECTpipeenv>>& for the environment of &(pipe)& transports.
 .option add_environment main "string list" empty
 .cindex "environment" "set values"
 This option allows to set individual environment variables that the
 currently linked libraries and programs in child processes use.
 See &<<SECTpipeenv>>& for the environment of &(pipe)& transports.

-.wen

 
 .option admin_groups main "string list&!!" unset
 .cindex "admin user"
 
 .option admin_groups main "string list&!!" unset
 .cindex "admin user"


@@ -14319,6 +14388,15 @@ For non-SMTP input and for batched SMTP input, the test is done at start-up; on
 failure a message is written to stderr and Exim exits with a non-zero code, as
 it obviously cannot send an error message of any kind.
 
 failure a message is written to stderr and Exim exits with a non-zero code, as
 it obviously cannot send an error message of any kind.
 

+.new
+.option chunking_advertise_hosts main "host list&!!" *
+.cindex CHUNKING advertisement
+.cindex "RFC 3030" "CHUNKING"
+The CHUNKING extension (RFC3030) will be advertised in the EHLO message to
+these hosts.
+Hosts may use the BDAT command as an alternate to DATA.
+.wen
+

 .option daemon_smtp_ports main string &`smtp`&
 .cindex "port" "for daemon"
 .cindex "TCP/IP" "setting listening ports"
 .option daemon_smtp_ports main string &`smtp`&
 .cindex "port" "for daemon"
 .cindex "TCP/IP" "setting listening ports"


@@ -14669,12 +14747,10 @@ own &'Reply-To:'& header line, the value of the &%errors_reply_to%& option is
 not used.
 
 
 not used.
 
 

-.new

 .option event_action main string&!! unset
 .cindex events
 This option declares a string to be expanded for Exim's events mechanism.
 For details see &<<CHAPevents>>&.
 .option event_action main string&!! unset
 .cindex events
 This option declares a string to be expanded for Exim's events mechanism.
 For details see &<<CHAPevents>>&.

-.wen

 
 
 .option exim_group main string "compile-time configured"
 
 
 .option exim_group main string "compile-time configured"


@@ -15022,12 +15098,10 @@ If the &%smtp_connection%& log selector is not set, this option has no effect.
 
 
 
 
 
 

-.new

 .option hosts_proxy main "host list&!!" unset
 .cindex proxy "proxy protocol"
 This option enables use of Proxy Protocol proxies for incoming
 connections.  For details see &<<SECTproxyInbound>>&.
 .option hosts_proxy main "host list&!!" unset
 .cindex proxy "proxy protocol"
 This option enables use of Proxy Protocol proxies for incoming
 connections.  For details see &<<SECTproxyInbound>>&.

-.wen

 
 
 .option hosts_treat_as_local main "domain list&!!" unset
 
 
 .option hosts_treat_as_local main "domain list&!!" unset


@@ -15096,7 +15170,6 @@ process rather than a remote host, and is using &%-bs%& to inject the messages,
 .option ignore_fromline_local main boolean false
 See &%ignore_fromline_hosts%& above.
 
 .option ignore_fromline_local main boolean false
 See &%ignore_fromline_hosts%& above.
 

-.new

 .option keep_environment main "string list" unset
 .cindex "environment" "values from"
 This option contains a string list of environment variables to keep.
 .option keep_environment main "string list" unset
 .cindex "environment" "values from"
 This option contains a string list of environment variables to keep.


@@ -15124,7 +15197,6 @@ See the &%add_environment%& main config option for a way to set
 environment variables to a fixed value.  The environment for &(pipe)&
 transports is handled separately, see section &<<SECTpipeenv>>& for
 details.
 environment variables to a fixed value.  The environment for &(pipe)&
 transports is handled separately, see section &<<SECTpipeenv>>& for
 details.

-.wen

 
 
 .option keep_malformed main time 4d
 
 
 .option keep_malformed main time 4d


@@ -15674,14 +15746,20 @@ local parts. Exim's default configuration does this.
 
 
 .option perl_at_start main boolean false
 
 
 .option perl_at_start main boolean false

+.cindex "Perl"

 This option is available only when Exim is built with an embedded Perl
 interpreter. See chapter &<<CHAPperl>>& for details of its use.
 
 
 .option perl_startup main string unset
 This option is available only when Exim is built with an embedded Perl
 interpreter. See chapter &<<CHAPperl>>& for details of its use.
 
 
 .option perl_startup main string unset

+.cindex "Perl"

 This option is available only when Exim is built with an embedded Perl
 interpreter. See chapter &<<CHAPperl>>& for details of its use.
 
 This option is available only when Exim is built with an embedded Perl
 interpreter. See chapter &<<CHAPperl>>& for details of its use.
 

+.option perl_startup main boolean false
+.cindex "Perl"
+This Option enables the taint mode of the embedded Perl interpreter.
+

 
 .option pgsql_servers main "string list" unset
 .cindex "PostgreSQL lookup type" "server list"
 
 .option pgsql_servers main "string list" unset
 .cindex "PostgreSQL lookup type" "server list"


@@ -15921,7 +15999,7 @@ large list. In most situations, &%queue_run_in_order%& should not be set.
 
 
 
 
 
 

-.option queue_run_max main integer 5
+.option queue_run_max main integer&!! 5

 .cindex "queue runner" "maximum number of"
 This controls the maximum number of queue runner processes that an Exim daemon
 can run simultaneously. This does not mean that it starts them all at once,
 .cindex "queue runner" "maximum number of"
 This controls the maximum number of queue runner processes that an Exim daemon
 can run simultaneously. This does not mean that it starts them all at once,


@@ -15936,6 +16014,13 @@ the limit, allowing any number of simultaneous queue runner processes to be
 run. If you do not want queue runs to occur, omit the &%-q%&&'xx'& setting on
 the daemon's command line.
 
 run. If you do not want queue runs to occur, omit the &%-q%&&'xx'& setting on
 the daemon's command line.
 

+.new
+.cindex queues named
+.cindex "named queues"
+To set limits for different named queues use
+an expansion depending on the &$queue_name$& variable.
+.wen
+

 .option queue_smtp_domains main "domain list&!!" unset
 .cindex "queueing incoming messages"
 .cindex "message" "queueing remote deliveries"
 .option queue_smtp_domains main "domain list&!!" unset
 .cindex "queueing incoming messages"
 .cindex "message" "queueing remote deliveries"


@@ -16605,14 +16690,12 @@ example, instead of &"Administrative prohibition"&, it might give:
 .endd
 
 
 .endd
 
 

-.new

 .option smtputf8_advertise_hosts main "host list&!!" *
 .cindex "SMTPUTF8" "advertising"
 When Exim is built with support for internationalised mail names,
 the availability therof is advertised in
 response to EHLO only to those client hosts that match this option. See
 chapter &<<CHAPi18n>>& for details of Exim's support for internationalisation.
 .option smtputf8_advertise_hosts main "host list&!!" *
 .cindex "SMTPUTF8" "advertising"
 When Exim is built with support for internationalised mail names,
 the availability therof is advertised in
 response to EHLO only to those client hosts that match this option. See
 chapter &<<CHAPi18n>>& for details of Exim's support for internationalisation.

-.wen

 
 
 .option spamd_address main string "see below"
 
 
 .option spamd_address main string "see below"


@@ -16859,9 +16942,7 @@ runs. This is appropriate behaviour for obtaining wall-clock time on some, but
 unfortunately not all, operating systems.
 
 
 unfortunately not all, operating systems.
 
 

-.new

 .option tls_advertise_hosts main "host list&!!" *
 .option tls_advertise_hosts main "host list&!!" *

-.wen

 .cindex "TLS" "advertising"
 .cindex "encryption" "on SMTP connection"
 .cindex "SMTP" "encrypted connection"
 .cindex "TLS" "advertising"
 .cindex "encryption" "on SMTP connection"
 .cindex "SMTP" "encrypted connection"


@@ -16869,11 +16950,9 @@ When Exim is built with support for TLS encrypted connections, the availability
 of the STARTTLS command to set up an encrypted session is advertised in
 response to EHLO only to those client hosts that match this option. See
 chapter &<<CHAPTLS>>& for details of Exim's support for TLS.
 of the STARTTLS command to set up an encrypted session is advertised in
 response to EHLO only to those client hosts that match this option. See
 chapter &<<CHAPTLS>>& for details of Exim's support for TLS.

-.new

 Note that the default value requires that a certificate be supplied
 Note that the default value requires that a certificate be supplied

-using the &%tls_certificate%& option.  If no certificate is available then
-the &%tls_advertise_hosts%& option should be set empty.
-.wen
+using the &%tls_certificate%& option.  If TLS support for incoming connections
+is not required the &%tls_advertise_hosts%& option should be set empty.

 
 
 .option tls_certificate main string&!! unset
 
 
 .option tls_certificate main string&!! unset


@@ -16894,6 +16973,11 @@ if the OpenSSL build supports TLS extensions and the TLS client sends the
 Server Name Indication extension, then this option and others documented in
 &<<SECTtlssni>>& will be re-expanded.
 
 Server Name Indication extension, then this option and others documented in
 &<<SECTtlssni>>& will be re-expanded.
 

+.new
+If this option is unset or empty a fresh self-signed certificate will be
+generated for every connection.
+.wen
+

 .option tls_crl main string&!! unset
 .cindex "TLS" "server certificate revocation list"
 .cindex "certificate" "revocation list for server"
 .option tls_crl main string&!! unset
 .cindex "TLS" "server certificate revocation list"
 .cindex "certificate" "revocation list for server"


@@ -16952,7 +17036,7 @@ in IKE is assigned number 23.
 
 Otherwise, the option must expand to the name used by Exim for any of a number
 of DH primes specified in RFC 2409, RFC 3526 and RFC 5114.  As names, Exim uses
 
 Otherwise, the option must expand to the name used by Exim for any of a number
 of DH primes specified in RFC 2409, RFC 3526 and RFC 5114.  As names, Exim uses

-"ike" followed by the number used by IKE, of "default" which corresponds to
+"ike" followed by the number used by IKE, or "default" which corresponds to

 "ike23".
 
 The available primes are:
 "ike23".
 
 The available primes are:


@@ -17000,9 +17084,7 @@ must if set expand to the absolute path to a file which contains a current
 status proof for the server's certificate, as obtained from the
 Certificate Authority.
 
 status proof for the server's certificate, as obtained from the
 Certificate Authority.
 

-.new

 Usable for GnuTLS 3.4.4 or 3.3.17 or OpenSSL 1.1.0 (or later).
 Usable for GnuTLS 3.4.4 or 3.3.17 or OpenSSL 1.1.0 (or later).

-.wen

 
 
 .option tls_on_connect_ports main "string list" unset
 
 
 .option tls_on_connect_ports main "string list" unset


@@ -17529,7 +17611,7 @@ This applies to all of the SRV, MX, AAAA, A lookup sequence.
 .cindex "DNSSEC" "MX lookup"
 .cindex "security" "MX lookup"
 .cindex "DNS" "DNSSEC"
 .cindex "DNSSEC" "MX lookup"
 .cindex "security" "MX lookup"
 .cindex "DNS" "DNSSEC"

-DNS lookups for domains matching &%dnssec_request_domains%& will be done with
+DNS lookups for domains matching &%dnssec_require_domains%& will be done with

 the dnssec request bit set.  Any returns not having the Authenticated Data bit
 (AD bit) set will be ignored and logged as a host-lookup failure.
 This applies to all of the SRV, MX, AAAA, A lookup sequence.
 the dnssec request bit set.  Any returns not having the Authenticated Data bit
 (AD bit) set will be ignored and logged as a host-lookup failure.
 This applies to all of the SRV, MX, AAAA, A lookup sequence.


@@ -19830,12 +19912,17 @@ list1:   :include:/opt/lists/list1
 .endd
 .next
 .cindex "address redirection" "to black hole"
 .endd
 .next
 .cindex "address redirection" "to black hole"

-Sometimes you want to throw away mail to a particular local part. Making the
-&%data%& option expand to an empty string does not work, because that causes
-the router to decline. Instead, the alias item
+.cindex "delivery" "discard"
+.cindex "delivery" "blackhole"

 .cindex "black hole"
 .cindex "abandoning mail"
 .cindex "black hole"
 .cindex "abandoning mail"

-&':blackhole:'& can be used. It does what its name implies. No delivery is
+Sometimes you want to throw away mail to a particular local part.  Making the
+&%data%& option expand to an empty string does not work, because that causes
+the router to decline. Instead, the alias item
+.code
+:blackhole:
+.endd
+can be used. It does what its name implies. No delivery is

 done, and no error message is generated. This has the same effect as specifying
 &_/dev/null_& as a destination, but it can be independently disabled.
 
 done, and no error message is generated. This has the same effect as specifying
 &_/dev/null_& as a destination, but it can be independently disabled.
 


@@ -20756,7 +20843,6 @@ resent to other recipients.
 .cindex events
 This option declares a string to be expanded for Exim's events mechanism.
 For details see &<<CHAPevents>>&.
 .cindex events
 This option declares a string to be expanded for Exim's events mechanism.
 For details see &<<CHAPevents>>&.

-.wen

 
 
 .option group transports string&!! "Exim group"
 
 
 .option group transports string&!! "Exim group"


@@ -20806,7 +20892,7 @@ is forced to fail, no action is taken. Other expansion failures are treated as
 errors and cause the delivery to be deferred.
 
 Unlike most options, &%headers_remove%& can be specified multiple times
 errors and cause the delivery to be deferred.
 
 Unlike most options, &%headers_remove%& can be specified multiple times

-for a router; all listed headers are removed.
+for a transport; all listed headers are removed.

 
 &*Warning*&: Because of the separate expansion of the list items,
 items that contain a list separator must have it doubled.
 
 &*Warning*&: Because of the separate expansion of the list items,
 items that contain a list separator must have it doubled.


@@ -20860,7 +20946,6 @@ transport, the &[initgroups()]& function is called when running the transport
 to ensure that any additional groups associated with the uid are set up.
 
 
 to ensure that any additional groups associated with the uid are set up.
 
 

-.new

 .option max_parallel transports integer&!! unset
 .cindex limit "transport parallelism"
 .cindex transport "parallel processes"
 .option max_parallel transports integer&!! unset
 .cindex limit "transport parallelism"
 .cindex transport "parallel processes"


@@ -20883,7 +20968,6 @@ relevant hints database whenever your system reboots. The names of the files
 start with &_misc_& and they are kept in the &_spool/db_& directory. There
 may be one or two files, depending on the type of DBM in use. The same files
 are used for ETRN and smtp transport serialization.
 start with &_misc_& and they are kept in the &_spool/db_& directory. There
 may be one or two files, depending on the type of DBM in use. The same files
 are used for ETRN and smtp transport serialization.

-.wen

 
 
 .option message_size_limit transports string&!! 0
 
 
 .option message_size_limit transports string&!! 0


@@ -21032,9 +21116,7 @@ headers that some sites insist on.
 This option sets up a filtering (in the Unix shell sense) process for messages
 at transport time. It should not be confused with mail filtering as set up by
 individual users or via a system filter.
 This option sets up a filtering (in the Unix shell sense) process for messages
 at transport time. It should not be confused with mail filtering as set up by
 individual users or via a system filter.

-.new

 If unset, or expanding to an empty string, no filtering is done.
 If unset, or expanding to an empty string, no filtering is done.

-.wen

 
 When the message is about to be written out, the command specified by
 &%transport_filter%& is started up in a separate, parallel process, and
 
 When the message is about to be written out, the command specified by
 &%transport_filter%& is started up in a separate, parallel process, and


@@ -22786,10 +22868,8 @@ If two messages arrive at almost the same time, and both are routed to a pipe
 delivery, the two pipe transports may be run concurrently. You must ensure that
 any pipe commands you set up are robust against this happening. If the commands
 write to a file, the &%exim_lock%& utility might be of use.
 delivery, the two pipe transports may be run concurrently. You must ensure that
 any pipe commands you set up are robust against this happening. If the commands
 write to a file, the &%exim_lock%& utility might be of use.

-.new

 Alternatively the &%max_parallel%& option could be used with a value
 of "1" to enforce serialization.
 Alternatively the &%max_parallel%& option could be used with a value
 of "1" to enforce serialization.

-.wen

 
 
 
 
 
 


@@ -23580,7 +23660,7 @@ This applies to all of the SRV, MX, AAAA, A lookup sequence.
 .cindex "DNSSEC" "MX lookup"
 .cindex "security" "MX lookup"
 .cindex "DNS" "DNSSEC"
 .cindex "DNSSEC" "MX lookup"
 .cindex "security" "MX lookup"
 .cindex "DNS" "DNSSEC"

-DNS lookups for domains matching &%dnssec_request_domains%& will be done with
+DNS lookups for domains matching &%dnssec_require_domains%& will be done with

 the dnssec request bit set.  Any returns not having the Authenticated Data bit
 (AD bit) set will be ignored and logged as a host-lookup failure.
 This applies to all of the SRV, MX, AAAA, A lookup sequence.
 the dnssec request bit set.  Any returns not having the Authenticated Data bit
 (AD bit) set will be ignored and logged as a host-lookup failure.
 This applies to all of the SRV, MX, AAAA, A lookup sequence.


@@ -23835,6 +23915,16 @@ connects. If authentication fails, Exim will try to transfer the message
 unauthenticated. See also &%hosts_require_auth%&, and chapter
 &<<CHAPSMTPAUTH>>& for details of authentication.
 
 unauthenticated. See also &%hosts_require_auth%&, and chapter
 &<<CHAPSMTPAUTH>>& for details of authentication.
 

+.new
+.option hosts_try_chunking smtp "host list&!!" *
+.cindex CHUNKING "enabling, in client"
+.cindex BDAT "SMTP command"
+.cindex "RFC 3030" "CHUNKING"
+This option provides a list of server to which, provided they announce
+CHUNKING support, Exim will attempt to use BDAT commands rather than DATA.
+BDAT will not be used in conjuction with a transport filter.
+.wen
+

 .option hosts_try_prdr smtp "host list&!!" *
 .cindex "PRDR" "enabling, optional in client"
 This option provides a list of servers to which, provided they announce
 .option hosts_try_prdr smtp "host list&!!" *
 .cindex "PRDR" "enabling, optional in client"
 This option provides a list of servers to which, provided they announce


@@ -23982,9 +24072,7 @@ start with &_misc_& and they are kept in the &_spool/db_& directory. There
 may be one or two files, depending on the type of DBM in use. The same files
 are used for ETRN serialization.
 
 may be one or two files, depending on the type of DBM in use. The same files
 are used for ETRN serialization.
 

-.new

 See also the &%max_parallel%& generic transport option.
 See also the &%max_parallel%& generic transport option.

-.wen

 
 
 .option size_addition smtp integer 1024
 
 
 .option size_addition smtp integer 1024


@@ -24004,12 +24092,10 @@ Alternatively, if the value of &%size_addition%& is set negative, it disables
 the use of the SIZE option altogether.
 
 
 the use of the SIZE option altogether.
 
 

-.new

 .option socks_proxy smtp string&!! unset
 .cindex proxy SOCKS
 This option enables use of SOCKS proxies for connections made by the
 transport.  For details see &<<SECTproxySOCKS>>&.
 .option socks_proxy smtp string&!! unset
 .cindex proxy SOCKS
 This option enables use of SOCKS proxies for connections made by the
 transport.  For details see &<<SECTproxySOCKS>>&.

-.wen

 
 
 .option tls_certificate smtp string&!! unset
 
 
 .option tls_certificate smtp string&!! unset


@@ -26954,7 +27040,8 @@ Documentation of the strings accepted may be found in the GnuTLS manual, under
 &url(http://www.gnutls.org/manual/html_node/Priority-Strings.html),
 but beware that this relates to GnuTLS 3, which may be newer than the version
 installed on your system.  If you are using GnuTLS 3,
 &url(http://www.gnutls.org/manual/html_node/Priority-Strings.html),
 but beware that this relates to GnuTLS 3, which may be newer than the version
 installed on your system.  If you are using GnuTLS 3,

-&url(http://www.gnutls.org/manual/gnutls.html#Listing-the-ciphersuites-in-a-priority-string, then the example code)
+then the example code
+&url(http://www.gnutls.org/manual/gnutls.html#Listing-the-ciphersuites-in-a-priority-string)

 on that site can be used to test a given string.
 
 For example:
 on that site can be used to test a given string.
 
 For example:


@@ -26999,10 +27086,17 @@ with the error
 If a STARTTLS command is issued within an existing TLS session, it is
 rejected with a 554 error code.
 
 If a STARTTLS command is issued within an existing TLS session, it is
 rejected with a 554 error code.
 

-To enable TLS operations on a server, you must set &%tls_advertise_hosts%& to
-match some hosts. You can, of course, set it to * to match all hosts.
-However, this is not all you need to do. TLS sessions to a server won't work
-without some further configuration at the server end.
+To enable TLS operations on a server, the &%tls_advertise_hosts%& option
+must be set to match some hosts. The default is * which matches all hosts.
+
+.new
+If this is all you do, TLS encryption will be enabled but not authentication -
+meaning that the peer has no assurance it is actually you he is talking to.
+You gain protection from a passive sniffer listening on the wire but not
+from someone able to intercept the communication.
+.wen
+
+Further protection requires some further configuration at the server end.

 
 It is rumoured that all existing clients that support TLS/SSL use RSA
 encryption. To make this work you need to set, in the server,
 
 It is rumoured that all existing clients that support TLS/SSL use RSA
 encryption. To make this work you need to set, in the server,


@@ -27170,9 +27264,7 @@ starts retrying to fetch an OCSP proof some time before its current
 proof expires.  The downside is that it requires server support.
 
 Unless Exim is built with the support disabled,
 proof expires.  The downside is that it requires server support.
 
 Unless Exim is built with the support disabled,

-.new

 or with GnuTLS earlier than version 3.3.16 / 3.4.8
 or with GnuTLS earlier than version 3.3.16 / 3.4.8

-.wen

 support for OCSP stapling is included.
 
 There is a global option called &%tls_ocsp_file%&.
 support for OCSP stapling is included.
 
 There is a global option called &%tls_ocsp_file%&.


@@ -27674,11 +27766,9 @@ Note that a client may issue more than one EHLO or HELO command in an SMTP
 session, and indeed is required to issue a new EHLO or HELO after successfully
 setting up encryption following a STARTTLS command.
 
 session, and indeed is required to issue a new EHLO or HELO after successfully
 setting up encryption following a STARTTLS command.
 

-.new

 Note also that a deny neither forces the client to go away nor means that
 mail will be refused on the connection.  Consider checking for
 &$sender_helo_name$& being defined in a MAIL or RCPT ACL to do that.
 Note also that a deny neither forces the client to go away nor means that
 mail will be refused on the connection.  Consider checking for
 &$sender_helo_name$& being defined in a MAIL or RCPT ACL to do that.

-.wen

 
 If the command is accepted by an &%accept%& verb that has a &%message%&
 modifier, the message may not contain more than one line (it will be truncated
 
 If the command is accepted by an &%accept%& verb that has a &%message%&
 modifier, the message may not contain more than one line (it will be truncated


@@ -27705,6 +27795,17 @@ received, before the final response to the DATA command is sent. This is
 the ACL specified by &%acl_smtp_data%&, which is the second ACL that is
 associated with the DATA command.
 
 the ACL specified by &%acl_smtp_data%&, which is the second ACL that is
 associated with the DATA command.
 

+.new
+.cindex CHUNKING "BDAT command"
+.cindex BDAT "SMTP command"
+.cindex "RFC 3030" CHUNKING
+If CHUNKING was advertised and a BDAT command sequence is received,
+the &%acl_smtp_predata%& ACL is not run.
+. XXX why not?  It should be possible, for the first BDAT.
+The &%acl_smtp_data%& is run after the last BDAT command and all of
+the data specified is received.
+.wen
+

 For both of these ACLs, it is not possible to reject individual recipients. An
 error response rejects the entire message. Unfortunately, it is known that some
 MTAs do not treat hard (5&'xx'&) responses to the DATA command (either
 For both of these ACLs, it is not possible to reject individual recipients. An
 error response rejects the entire message. Unfortunately, it is known that some
 MTAs do not treat hard (5&'xx'&) responses to the DATA command (either


@@ -27757,11 +27858,9 @@ for some or all recipients.
 PRDR may be used to support per-user content filtering.  Without it
 one must defer any recipient after the first that has a different
 content-filter configuration.  With PRDR, the RCPT-time check
 PRDR may be used to support per-user content filtering.  Without it
 one must defer any recipient after the first that has a different
 content-filter configuration.  With PRDR, the RCPT-time check

-.new

 .cindex "PRDR" "variable for"
 for this can be disabled when the variable &$prdr_requested$&
 is &"yes"&.
 .cindex "PRDR" "variable for"
 for this can be disabled when the variable &$prdr_requested$&
 is &"yes"&.

-.wen

 Any required difference in behaviour of the main DATA-time
 ACL should however depend on the PRDR-time ACL having run, as Exim
 will avoid doing so in some situations (e.g.  single-recipient mails).
 Any required difference in behaviour of the main DATA-time
 ACL should however depend on the PRDR-time ACL having run, as Exim
 will avoid doing so in some situations (e.g.  single-recipient mails).


@@ -28028,7 +28127,7 @@ provides a means of specifying an &"and"& conjunction between conditions. For
 example:
 .code
 deny  dnslists = list1.example
 example:
 .code
 deny  dnslists = list1.example

-dnslists = list2.example
+      dnslists = list2.example

 .endd
 If there are no conditions, the verb is always obeyed. Exim stops evaluating
 the conditions and modifiers when it reaches a condition that fails. What
 .endd
 If there are no conditions, the verb is always obeyed. Exim stops evaluating
 the conditions and modifiers when it reaches a condition that fails. What


@@ -28050,8 +28149,8 @@ after &%endpass%&, the ACL returns &"deny"&. Consider this statement, used to
 check a RCPT command:
 .code
 accept domains = +local_domains
 check a RCPT command:
 .code
 accept domains = +local_domains

-endpass
-verify = recipient
+       endpass
+       verify = recipient

 .endd
 If the recipient domain does not match the &%domains%& condition, control
 passes to the next statement. If it does match, the recipient is verified, and
 .endd
 If the recipient domain does not match the &%domains%& condition, control
 passes to the next statement. If it does match, the recipient is verified, and


@@ -28603,6 +28702,19 @@ all the conditions are true, wherever it appears in an ACL command, whereas
 effect.
 
 
 effect.
 
 

+.new
+.vitem &*queue*&&~=&~<&'text'&>
+This modifier specifies the use of a named queue for spool files
+for the message.
+It can only be used before the message is received (i.e. not in
+the DATA ACL).
+This could be used, for example, for known high-volume burst sources
+of traffic, or for quarantine of messages.
+Separate queue-runner processes will be needed for named queues.
+If the text after expansion is empty, the default queue is used.
+.wen
+
+

 .vitem &*remove_header*&&~=&~<&'text'&>
 This modifier specifies one or more header names in a colon-separated list
  that are to be removed from an incoming message, assuming, of course, that
 .vitem &*remove_header*&&~=&~<&'text'&>
 This modifier specifies one or more header names in a colon-separated list
  that are to be removed from an incoming message, assuming, of course, that


@@ -28689,7 +28801,7 @@ Notice that we put back the lower cased version afterwards, assuming that
 is what is wanted for subsequent tests.
 
 
 is what is wanted for subsequent tests.
 
 

-.vitem &*control&~=&~cutthrough_delivery*&
+.vitem &*control&~=&~cutthrough_delivery/*&<&'options'&>

 .cindex "&ACL;" "cutthrough routing"
 .cindex "cutthrough" "requesting"
 This option requests delivery be attempted while the item is being received.
 .cindex "&ACL;" "cutthrough routing"
 .cindex "cutthrough" "requesting"
 This option requests delivery be attempted while the item is being received.


@@ -28704,9 +28816,7 @@ and data is copied from one to the other.
 An attempt to set this option for any recipient but the first
 for a mail will be quietly ignored.
 If a recipient-verify callout
 An attempt to set this option for any recipient but the first
 for a mail will be quietly ignored.
 If a recipient-verify callout

-.new

 (with use_sender)
 (with use_sender)

-.wen

 connection is subsequently
 requested in the same ACL it is held open and used for
 any subsequent recipients and the data,
 connection is subsequently
 requested in the same ACL it is held open and used for
 any subsequent recipients and the data,


@@ -28718,13 +28828,11 @@ Note also that headers cannot be
 modified by any of the post-data ACLs (DATA, MIME and DKIM).
 Headers may be modified by routers (subject to the above) and transports.
 
 modified by any of the post-data ACLs (DATA, MIME and DKIM).
 Headers may be modified by routers (subject to the above) and transports.
 

-.new

 All the usual ACLs are called; if one results in the message being
 rejected, all effort spent in delivery (including the costs on
 the ultimate destination) will be wasted.
 Note that in the case of data-time ACLs this includes the entire
 message body.
 All the usual ACLs are called; if one results in the message being
 rejected, all effort spent in delivery (including the costs on
 the ultimate destination) will be wasted.
 Note that in the case of data-time ACLs this includes the entire
 message body.

-.wen

 
 Cutthrough delivery is not supported via transport-filters or when DKIM signing
 of outgoing messages is done, because it sends data to the ultimate destination
 
 Cutthrough delivery is not supported via transport-filters or when DKIM signing
 of outgoing messages is done, because it sends data to the ultimate destination


@@ -28733,11 +28841,20 @@ It is not supported for messages received with the SMTP PRDR option in use.
 
 Should the ultimate destination system positively accept or reject the mail,
 a corresponding indication is given to the source system and nothing is queued.
 
 Should the ultimate destination system positively accept or reject the mail,
 a corresponding indication is given to the source system and nothing is queued.

-If there is a temporary error the item is queued for later delivery in the
-usual fashion. If the item is successfully delivered in cutthrough mode
+If the item is successfully delivered in cutthrough mode

 the delivery log lines are tagged with ">>" rather than "=>" and appear
 before the acceptance "<=" line.
 
 the delivery log lines are tagged with ">>" rather than "=>" and appear
 before the acceptance "<=" line.
 

+.new
+If there is a temporary error the item is queued for later delivery in the
+usual fashion.
+This behaviour can be adjusted by appending the option &*defer=*&<&'value'&>
+to the control; the default value is &"spool"& and the alternate value
+&"pass"& copies an SMTP defer response from the target back to the initiator
+and does not queue the message.
+Note that this is independent of any receipient verify conditions in the ACL.
+.wen
+

 Delivery in this mode avoids the generation of a bounce mail to a
 (possibly faked)
 sender when the destination system is doing content-scan based rejection.
 Delivery in this mode avoids the generation of a bounce mail to a
 (possibly faked)
 sender when the destination system is doing content-scan based rejection.


@@ -28751,13 +28868,18 @@ with &`-d`&, with the output going to a new logfile, by default called
 &'debuglog'&.  The filename can be adjusted with the &'tag'& option, which
 may access any variables already defined.  The logging may be adjusted with
 the &'opts'& option, which takes the same values as the &`-d`& command-line
 &'debuglog'&.  The filename can be adjusted with the &'tag'& option, which
 may access any variables already defined.  The logging may be adjusted with
 the &'opts'& option, which takes the same values as the &`-d`& command-line

-option.  Some examples (which depend on variables that don't exist in all
+option.
+.new
+Logging may be stopped, and the file removed, with the &'kill'& option.
+.wen
+Some examples (which depend on variables that don't exist in all

 contexts):
 .code
       control = debug
       control = debug/tag=.$sender_host_address
       control = debug/opts=+expand+acl
       control = debug/tag=.$message_exim_id/opts=+expand
 contexts):
 .code
       control = debug
       control = debug/tag=.$sender_host_address
       control = debug/opts=+expand+acl
       control = debug/tag=.$message_exim_id/opts=+expand

+      control = debug/kill

 .endd
 
 
 .endd
 
 


@@ -28954,12 +29076,10 @@ data is read.
 &*Note:*& This control applies only to the current message, not to any others
 that are being submitted at the same time using &%-bs%& or &%-bS%&.
 
 &*Note:*& This control applies only to the current message, not to any others
 that are being submitted at the same time using &%-bs%& or &%-bS%&.
 

-.new

 .vitem &*control&~=&~utf8_downconvert*&
 This control enables conversion of UTF-8 in message addresses
 to a-label form.
 For details see &<<SECTi18nMTA>>&.
 .vitem &*control&~=&~utf8_downconvert*&
 This control enables conversion of UTF-8 in message addresses
 to a-label form.
 For details see &<<SECTi18nMTA>>&.

-.wen

 .endlist vlist
 
 
 .endlist vlist
 
 


@@ -28998,7 +29118,7 @@ any ACL verb, including &%deny%& (though this is potentially useful only in a
 RCPT ACL).
 
 Headers will not be added to the message if the modifier is used in
 RCPT ACL).
 
 Headers will not be added to the message if the modifier is used in

-DATA, MIME or DKIM ACLs for messages delivered by cutthrough routing.
+DATA, MIME or DKIM ACLs for a message delivered by cutthrough routing.

 
 Leading and trailing newlines are removed from
 the data for the &%add_header%& modifier; if it then
 
 Leading and trailing newlines are removed from
 the data for the &%add_header%& modifier; if it then


@@ -29099,8 +29219,8 @@ receiving a message). The message must ultimately be accepted for
 with any ACL verb, including &%deny%&, though this is really not useful for
 any verb that doesn't result in a delivered message.
 
 with any ACL verb, including &%deny%&, though this is really not useful for
 any verb that doesn't result in a delivered message.
 

-Headers will not be removed to the message if the modifier is used in
-DATA, MIME or DKIM ACLs for messages delivered by cutthrough routing.
+Headers will not be removed from the message if the modifier is used in
+DATA, MIME or DKIM ACLs for a message delivered by cutthrough routing.

 
 More than one header can be removed at the same time by using a colon separated
 list of header names. The header matching is case insensitive. Wildcards are
 
 More than one header can be removed at the same time by using a colon separated
 list of header names. The header matching is case insensitive. Wildcards are


@@ -29238,12 +29358,6 @@ If all goes well, the condition is true. It is false only if there are
 problems such as a syntax error or a memory shortage. For more details, see
 chapter &<<CHAPexiscan>>&.
 
 problems such as a syntax error or a memory shortage. For more details, see
 chapter &<<CHAPexiscan>>&.
 

-.vitem &*demime&~=&~*&<&'extension&~list'&>
-.cindex "&%demime%& ACL condition"
-This condition is available only when Exim is compiled with the
-content-scanning extension. Its use is described in section
-&<<SECTdemimecond>>&.
-

 .vitem &*dnslists&~=&~*&<&'list&~of&~domain&~names&~and&~other&~data'&>
 .cindex "&%dnslists%& ACL condition"
 .cindex "DNS list" "in ACL"
 .vitem &*dnslists&~=&~*&<&'list&~of&~domain&~names&~and&~other&~data'&>
 .cindex "&%dnslists%& ACL condition"
 .cindex "DNS list" "in ACL"


@@ -29640,9 +29754,7 @@ warn  message  = X-Warn: sending host is on dialups list
 .cindex cacheing "of dns lookup"
 .cindex DNS TTL
 DNS list lookups are cached by Exim for the duration of the SMTP session
 .cindex cacheing "of dns lookup"
 .cindex DNS TTL
 DNS list lookups are cached by Exim for the duration of the SMTP session

-.new

 (but limited by the DNS return TTL value),
 (but limited by the DNS return TTL value),

-.wen

 so a lookup based on the IP address is done at most once for any incoming
 connection (assuming long-enough TTL).
 Exim does not share information between multiple incoming
 so a lookup based on the IP address is done at most once for any incoming
 connection (assuming long-enough TTL).
 Exim does not share information between multiple incoming


@@ -31056,10 +31168,6 @@ conditions.
 Two new main configuration options: &%av_scanner%& and &%spamd_address%&.
 .endlist
 
 Two new main configuration options: &%av_scanner%& and &%spamd_address%&.
 .endlist
 

-There is another content-scanning configuration option for &_Local/Makefile_&,
-called WITH_OLD_DEMIME. If this is set, the old, deprecated &%demime%& ACL
-condition is compiled, in addition to all the other content-scanning features.
-

 Content-scanning is continually evolving, and new features are still being
 added. While such features are still unstable and liable to incompatible
 changes, they are made available in Exim by setting options whose names begin
 Content-scanning is continually evolving, and new features are still being
 added. While such features are still unstable and liable to incompatible
 changes, they are made available in Exim by setting options whose names begin


@@ -31309,7 +31417,7 @@ This is a daemon type scanner that is aimed mainly at Polish users, though some
 parts of documentation are now available in English. You can get it at
 &url(http://linux.mks.com.pl/). The only option for this scanner type is
 the maximum number of processes used simultaneously to scan the attachments,
 parts of documentation are now available in English. You can get it at
 &url(http://linux.mks.com.pl/). The only option for this scanner type is
 the maximum number of processes used simultaneously to scan the attachments,

-provided that the demime facility is employed and also provided that mksd has
+provided that mksd has

 been run with at least the same number of child processes. For example:
 .code
 av_scanner = mksd:2
 been run with at least the same number of child processes. For example:
 .code
 av_scanner = mksd:2


@@ -31400,23 +31508,17 @@ When a virus is found, the condition sets up an expansion variable called
 &%message%& modifier that specifies the error returned to the sender, and/or in
 logging data.
 
 &%message%& modifier that specifies the error returned to the sender, and/or in
 logging data.
 

-If your virus scanner cannot unpack MIME and TNEF containers itself, you should
-use the &%demime%& condition (see section &<<SECTdemimecond>>&) before the
-&%malware%& condition.
-

 Beware the interaction of Exim's &%message_size_limit%& with any size limits
 imposed by your anti-virus scanner.
 
 Here is a very simple scanning example:
 .code
 deny message = This message contains malware ($malware_name)
 Beware the interaction of Exim's &%message_size_limit%& with any size limits
 imposed by your anti-virus scanner.
 
 Here is a very simple scanning example:
 .code
 deny message = This message contains malware ($malware_name)

-     demime = *

      malware = *
 .endd
 The next example accepts messages when there is a problem with the scanner:
 .code
 deny message = This message contains malware ($malware_name)
      malware = *
 .endd
 The next example accepts messages when there is a problem with the scanner:
 .code
 deny message = This message contains malware ($malware_name)

-     demime = *

      malware = */defer_ok
 .endd
 The next example shows how to use an ACL variable to scan with both sophie and
      malware = */defer_ok
 .endd
 The next example shows how to use an ACL variable to scan with both sophie and


@@ -31496,7 +31598,7 @@ condition defers.
 
 Unix and TCP socket specifications may be mixed in any order.
 Each element of the list is a list itself, space-separated by default
 
 Unix and TCP socket specifications may be mixed in any order.
 Each element of the list is a list itself, space-separated by default

-and changeable in the usual way.
+and changeable in the usual way; take care to not double the separator.

 
 For TCP socket specifications a host name or IP (v4 or v6, but
 subject to list-separator quoting rules) address can be used,
 
 For TCP socket specifications a host name or IP (v4 or v6, but
 subject to list-separator quoting rules) address can be used,


@@ -31623,6 +31725,11 @@ spam bar is 50 characters.
 A multiline text table, containing the full SpamAssassin report for the
 message. Useful for inclusion in headers or reject messages.
 This variable is only usable in a DATA-time ACL.
 A multiline text table, containing the full SpamAssassin report for the
 message. Useful for inclusion in headers or reject messages.
 This variable is only usable in a DATA-time ACL.

+.new
+Beware that SpamAssassin may return non-ASCII characters, especially
+when running in country-specific locales, which are not legal
+unencoded in headers.
+.wen

 
 .vitem &$spam_action$&
 For SpamAssassin either 'reject' or 'no action' depending on the
 
 .vitem &$spam_action$&
 For SpamAssassin either 'reject' or 'no action' depending on the


@@ -31912,90 +32019,6 @@ are set to any substrings captured by the regular expression.
 &*Warning*&: With large messages, these conditions can be fairly
 CPU-intensive.
 
 &*Warning*&: With large messages, these conditions can be fairly
 CPU-intensive.
 

-
-
-
-.section "The demime condition" "SECTdemimecond"
-.cindex "content scanning" "MIME checking"
-.cindex "MIME content scanning"
-The &%demime%& ACL condition provides MIME unpacking, sanity checking and file
-extension blocking. It is usable only in the DATA and non-SMTP ACLs. The
-&%demime%& condition uses a simpler interface to MIME decoding than the MIME
-ACL functionality, but provides no additional facilities. Please note that this
-condition is deprecated and kept only for backward compatibility. You must set
-the WITH_OLD_DEMIME option in &_Local/Makefile_& at build time to be able to
-use the &%demime%& condition.
-
-The &%demime%& condition unpacks MIME containers in the message. It detects
-errors in MIME containers and can match file extensions found in the message
-against a list. Using this facility produces files containing the unpacked MIME
-parts of the message in the temporary scan directory. If you do antivirus
-scanning, it is recommended that you use the &%demime%& condition before the
-antivirus (&%malware%&) condition.
-
-On the right-hand side of the &%demime%& condition you can pass a
-colon-separated list of file extensions that it should match against. For
-example:
-.code
-deny message = Found blacklisted file attachment
-     demime  = vbs:com:bat:pif:prf:lnk
-.endd
-If one of the file extensions is found, the condition is true, otherwise it is
-false. If there is a temporary error while demimeing (for example, &"disk
-full"&), the condition defers, and the message is temporarily rejected (unless
-the condition is on a &%warn%& verb).
-
-The right-hand side is expanded before being treated as a list, so you can have
-conditions and lookups there. If it expands to an empty string, &"false"&, or
-zero (&"0"&), no demimeing is done and the condition is false.
-
-The &%demime%& condition set the following variables:
-
-.vlist
-.vitem &$demime_errorlevel$&
-.vindex "&$demime_errorlevel$&"
-When an error is detected in a MIME container, this variable contains the
-severity of the error, as an integer number. The higher the value, the more
-severe the error (the current maximum value is 3). If this variable is unset or
-zero, no error occurred.
-
-.vitem &$demime_reason$&
-.vindex "&$demime_reason$&"
-When &$demime_errorlevel$& is greater than zero, this variable contains a
-human-readable text string describing the MIME error that occurred.
-.endlist
-
-.vlist
-.vitem &$found_extension$&
-.vindex "&$found_extension$&"
-When the &%demime%& condition is true, this variable contains the file
-extension it found.
-.endlist
-
-Both &$demime_errorlevel$& and &$demime_reason$& are set by the first call of
-the &%demime%& condition, and are not changed on subsequent calls.
-
-If you do not want to check for file extensions, but rather use the &%demime%&
-condition for unpacking or error checking purposes, pass &"*"& as the
-right-hand side value. Here is a more elaborate example of how to use this
-facility:
-.code
-# Reject messages with serious MIME container errors
-deny  message = Found MIME error ($demime_reason).
-      demime = *
-      condition = ${if >{$demime_errorlevel}{2}{1}{0}}
-
-# Reject known virus spreading file extensions.
-# Accepting these is pretty much braindead.
-deny  message = contains $found_extension file (blacklisted).
-      demime  = com:vbs:bat:pif:scr
-
-# Freeze .exe and .doc files. Postmaster can
-# examine them and eventually thaw them.
-deny  log_message = Another $found_extension file.
-      demime = exe:doc
-      control = freeze
-.endd

 .ecindex IIDcosca
 
 
 .ecindex IIDcosca
 
 


@@ -33292,6 +33315,7 @@ incoming SMTP message from a source that is not permitted to send them.
 
 .section "Resent- header lines" "SECID220"
 .cindex "&%Resent-%& header lines"
 
 .section "Resent- header lines" "SECID220"
 .cindex "&%Resent-%& header lines"

+.cindex "header lines" "Resent-"

 RFC 2822 makes provision for sets of header lines starting with the string
 &`Resent-`& to be added to a message when it is resent by the original
 recipient to somebody else. These headers are &'Resent-Date:'&,
 RFC 2822 makes provision for sets of header lines starting with the string
 &`Resent-`& to be added to a message when it is resent by the original
 recipient to somebody else. These headers are &'Resent-Date:'&,


@@ -33348,6 +33372,7 @@ existing &'Bcc:'& is not removed.
 
 .section "The Date: header line" "SECID223"
 .cindex "&'Date:'& header line"
 
 .section "The Date: header line" "SECID223"
 .cindex "&'Date:'& header line"

+.cindex "header lines" "Date:"

 If a locally-generated or submission-mode message has no &'Date:'& header line,
 Exim adds one, using the current date and time, unless the
 &%suppress_local_fixups%& control has been specified.
 If a locally-generated or submission-mode message has no &'Date:'& header line,
 Exim adds one, using the current date and time, unless the
 &%suppress_local_fixups%& control has been specified.


@@ -33365,6 +33390,7 @@ messages.
 
 .section "The Envelope-to: header line" "SECID225"
 .cindex "&'Envelope-to:'& header line"
 
 .section "The Envelope-to: header line" "SECID225"
 .cindex "&'Envelope-to:'& header line"

+.cindex "header lines" "Envelope-to:"

 .oindex "&%envelope_to_remove%&"
 &'Envelope-to:'& header lines are not part of the standard RFC 2822 header set.
 Exim can be configured to add them to the final delivery of messages. (See the
 .oindex "&%envelope_to_remove%&"
 &'Envelope-to:'& header lines are not part of the standard RFC 2822 header set.
 Exim can be configured to add them to the final delivery of messages. (See the


@@ -33376,6 +33402,7 @@ messages.
 
 .section "The From: header line" "SECTthefrohea"
 .cindex "&'From:'& header line"
 
 .section "The From: header line" "SECTthefrohea"
 .cindex "&'From:'& header line"

+.cindex "header lines" "From:"

 .cindex "Sendmail compatibility" "&""From""& line"
 .cindex "message" "submission"
 .cindex "submission mode"
 .cindex "Sendmail compatibility" "&""From""& line"
 .cindex "message" "submission"
 .cindex "submission mode"


@@ -33419,6 +33446,7 @@ name as described in section &<<SECTconstr>>&.
 
 .section "The Message-ID: header line" "SECID226"
 .cindex "&'Message-ID:'& header line"
 
 .section "The Message-ID: header line" "SECID226"
 .cindex "&'Message-ID:'& header line"

+.cindex "header lines" "Message-ID:"

 .cindex "message" "submission"
 .oindex "&%message_id_header_text%&"
 If a locally-generated or submission-mode incoming message does not contain a
 .cindex "message" "submission"
 .oindex "&%message_id_header_text%&"
 If a locally-generated or submission-mode incoming message does not contain a


@@ -33434,6 +33462,7 @@ in this header line by setting the &%message_id_header_text%& and/or
 
 .section "The Received: header line" "SECID227"
 .cindex "&'Received:'& header line"
 
 .section "The Received: header line" "SECID227"
 .cindex "&'Received:'& header line"

+.cindex "header lines" "Received:"

 A &'Received:'& header line is added at the start of every message. The
 contents are defined by the &%received_header_text%& configuration option, and
 Exim automatically adds a semicolon and a timestamp to the configured string.
 A &'Received:'& header line is added at the start of every message. The
 contents are defined by the &%received_header_text%& configuration option, and
 Exim automatically adds a semicolon and a timestamp to the configured string.


@@ -33450,6 +33479,7 @@ changed to the time of acceptance, which is (apart from a small delay while the
 
 .section "The References: header line" "SECID228"
 .cindex "&'References:'& header line"
 
 .section "The References: header line" "SECID228"
 .cindex "&'References:'& header line"

+.cindex "header lines" "References:"

 Messages created by the &(autoreply)& transport include a &'References:'&
 header line. This is constructed according to the rules that are described in
 section 3.64 of RFC 2822 (which states that replies should contain such a
 Messages created by the &(autoreply)& transport include a &'References:'&
 header line. This is constructed according to the rules that are described in
 section 3.64 of RFC 2822 (which states that replies should contain such a


@@ -33464,6 +33494,7 @@ incoming message. If there are more than 12, the first one and then the final
 
 .section "The Return-path: header line" "SECID229"
 .cindex "&'Return-path:'& header line"
 
 .section "The Return-path: header line" "SECID229"
 .cindex "&'Return-path:'& header line"

+.cindex "header lines" "Return-path:"

 .oindex "&%return_path_remove%&"
 &'Return-path:'& header lines are defined as something an MTA may insert when
 it does the final delivery of messages. (See the generic &%return_path_add%&
 .oindex "&%return_path_remove%&"
 &'Return-path:'& header lines are defined as something an MTA may insert when
 it does the final delivery of messages. (See the generic &%return_path_add%&


@@ -33476,6 +33507,7 @@ default), Exim removes &'Return-path:'& header lines from incoming messages.
 .section "The Sender: header line" "SECTthesenhea"
 .cindex "&'Sender:'& header line"
 .cindex "message" "submission"
 .section "The Sender: header line" "SECTthesenhea"
 .cindex "&'Sender:'& header line"
 .cindex "message" "submission"

+.cindex "header lines" "Sender:"

 For a locally-originated message from an untrusted user, Exim may remove an
 existing &'Sender:'& header line, and it may add a new one. You can modify
 these actions by setting the &%local_sender_retain%& option true, the
 For a locally-originated message from an untrusted user, Exim may remove an
 existing &'Sender:'& header line, and it may add a new one. You can modify
 these actions by setting the &%local_sender_retain%& option true, the


@@ -34177,13 +34209,11 @@ When Exim receives a VRFY or EXPN command on a TCP/IP connection, it
 runs the ACL specified by &%acl_smtp_vrfy%& or &%acl_smtp_expn%& (as
 appropriate) in order to decide whether the command should be accepted or not.
 
 runs the ACL specified by &%acl_smtp_vrfy%& or &%acl_smtp_expn%& (as
 appropriate) in order to decide whether the command should be accepted or not.
 

-.new

 .cindex "VRFY" "processing"
 When no ACL is defined for VRFY, or if it rejects without
 setting an explicit response code, the command is accepted
 (with a 252 SMTP response code)
 in order to support awkward clients that do a VRFY before every RCPT.
 .cindex "VRFY" "processing"
 When no ACL is defined for VRFY, or if it rejects without
 setting an explicit response code, the command is accepted
 (with a 252 SMTP response code)
 in order to support awkward clients that do a VRFY before every RCPT.

-.wen

 When VRFY is accepted, it runs exactly the same code as when Exim is
 called with the &%-bv%& option, and returns 250/451/550
 SMTP response codes.
 When VRFY is accepted, it runs exactly the same code as when Exim is
 called with the &%-bv%& option, and returns 250/451/550
 SMTP response codes.


@@ -35446,6 +35476,7 @@ picked out by the distinctive two-character flags that immediately follow the
 timestamp. The flags are:
 .display
 &`<=`&     message arrival
 timestamp. The flags are:
 .display
 &`<=`&     message arrival

+&`(=`&     message fakereject

 &`=>`&     normal message delivery
 &`->`&     additional address in same delivery
 &`>>`&     cutthrough message delivery
 &`=>`&     normal message delivery
 &`->`&     additional address in same delivery
 &`>>`&     cutthrough message delivery


@@ -35673,14 +35704,18 @@ the following table:
 &`CV  `&        certificate verification status
 &`D   `&        duration of &"no mail in SMTP session"&
 &`DN  `&        distinguished name from peer certificate
 &`CV  `&        certificate verification status
 &`D   `&        duration of &"no mail in SMTP session"&
 &`DN  `&        distinguished name from peer certificate

+&`DS  `&        DNSSEC secured lookups

 &`DT  `&        on &`=>`& lines: time taken for a delivery
 &`F   `&        sender address (on delivery lines)
 &`H   `&        host name and IP address
 &`I   `&        local interface used
 &`DT  `&        on &`=>`& lines: time taken for a delivery
 &`F   `&        sender address (on delivery lines)
 &`H   `&        host name and IP address
 &`I   `&        local interface used

+&`K   `&        CHUNKING extension used

 &`id  `&        message id for incoming message
 &`P   `&        on &`<=`& lines: protocol used
 &`    `&        on &`=>`& and &`**`& lines: return path
 &`id  `&        message id for incoming message
 &`P   `&        on &`<=`& lines: protocol used
 &`    `&        on &`=>`& and &`**`& lines: return path

-&`PRX `&        on &'<='& and&`=>`& lines: proxy address
+&`PRDR`&        PRDR extension used
+&`PRX `&        on &'<='& and &`=>`& lines: proxy address
+&`Q   `&        alternate queue name

 &`QT  `&        on &`=>`& lines: time spent on queue so far
 &`    `&        on &"Completed"& lines: time spent on queue
 &`R   `&        on &`<=`& lines: reference for local bounce
 &`QT  `&        on &`=>`& lines: time spent on queue so far
 &`    `&        on &"Completed"& lines: time spent on queue
 &`R   `&        on &`<=`& lines: reference for local bounce


@@ -35763,23 +35798,20 @@ selection marked by asterisks:
 &` deliver_time               `&  time taken to perform delivery
 &` delivery_size              `&  add &`S=`&&'nnn'& to => lines
 &`*dnslist_defer              `&  defers of DNS list (aka RBL) lookups
 &` deliver_time               `&  time taken to perform delivery
 &` delivery_size              `&  add &`S=`&&'nnn'& to => lines
 &`*dnslist_defer              `&  defers of DNS list (aka RBL) lookups

+&` dnssec                     `&  DNSSEC secured lookups

 &`*etrn                       `&  ETRN commands
 &`*host_lookup_failed         `&  as it says
 &` ident_timeout              `&  timeout for ident connection
 &` incoming_interface         `&  local interface on <= and => lines
 &` incoming_port              `&  remote port on <= lines
 &`*lost_incoming_connection   `&  as it says (includes timeouts)
 &`*etrn                       `&  ETRN commands
 &`*host_lookup_failed         `&  as it says
 &` ident_timeout              `&  timeout for ident connection
 &` incoming_interface         `&  local interface on <= and => lines
 &` incoming_port              `&  remote port on <= lines
 &`*lost_incoming_connection   `&  as it says (includes timeouts)

-.new

 &` outgoing_interface         `&  local interface on => lines
 &` outgoing_interface         `&  local interface on => lines

-.wen

 &` outgoing_port              `&  add remote port to => lines
 &`*queue_run                  `&  start and end queue runs
 &` queue_time                 `&  time on queue for one recipient
 &` queue_time_overall         `&  time on queue for whole message
 &` pid                        `&  Exim process id
 &` outgoing_port              `&  add remote port to => lines
 &`*queue_run                  `&  start and end queue runs
 &` queue_time                 `&  time on queue for one recipient
 &` queue_time_overall         `&  time on queue for whole message
 &` pid                        `&  Exim process id

-.new

 &` proxy                      `&  proxy address on <= and => lines
 &` proxy                      `&  proxy address on <= and => lines

-.wen

 &` received_recipients        `&  recipients on <= lines
 &` received_sender            `&  sender on <= lines
 &`*rejected_header            `&  header contents on reject log
 &` received_recipients        `&  recipients on <= lines
 &` received_sender            `&  sender on <= lines
 &`*rejected_header            `&  header contents on reject log


@@ -35874,6 +35906,14 @@ the &"=>"& line, tagged with S=.
 &%dnslist_defer%&: A log entry is written if an attempt to look up a host in a
 DNS black list suffers a temporary error.
 .next
 &%dnslist_defer%&: A log entry is written if an attempt to look up a host in a
 DNS black list suffers a temporary error.
 .next

+.cindex log dnssec
+.cindex dnssec logging
+&%dnssec%&: For message acceptance and (attempted) delivery log lines, when
+dns lookups gave secure results a tag of DS is added.
+For acceptance this covers the reverse and forward lookups for host name verification.
+It does not cover helo-name verification.
+For delivery this covers the SRV, MX, A and/or AAAA lookups.
+.next

 .cindex "log" "ETRN commands"
 .cindex "ETRN" "logging"
 &%etrn%&: Every valid ETRN command that is received is logged, before the ACL
 .cindex "log" "ETRN commands"
 .cindex "ETRN" "logging"
 &%etrn%&: Every valid ETRN command that is received is logged, before the ACL


@@ -35902,11 +35942,8 @@ to the &"<="& line as an IP address in square brackets, tagged by I= and
 followed by a colon and the port number. The local interface and port are also
 added to other SMTP log lines, for example &"SMTP connection from"&, to
 rejection lines, and (despite the name) to outgoing &"=>"& and &"->"& lines.
 followed by a colon and the port number. The local interface and port are also
 added to other SMTP log lines, for example &"SMTP connection from"&, to
 rejection lines, and (despite the name) to outgoing &"=>"& and &"->"& lines.

-.new

 The latter can be disabled by turning off the &%outgoing_interface%& option.
 The latter can be disabled by turning off the &%outgoing_interface%& option.

-.wen

 .next
 .next

-.new

 .cindex log "incoming proxy address"
 .cindex proxy "logging proxy address"
 .cindex "TCP/IP" "logging proxy address"
 .cindex log "incoming proxy address"
 .cindex proxy "logging proxy address"
 .cindex "TCP/IP" "logging proxy address"


@@ -35915,7 +35952,6 @@ of the proxy, tagged by PRX=, on the &"<="& line for a message accepted
 on a proxied connection
 or the &"=>"& line for a message delivered on a proxied connection..
 See &<<SECTproxyInbound>>& for more information.
 on a proxied connection
 or the &"=>"& line for a message delivered on a proxied connection..
 See &<<SECTproxyInbound>>& for more information.

-.wen

 .next
 .cindex "log" "incoming remote port"
 .cindex "port" "logging remote"
 .next
 .cindex "log" "incoming remote port"
 .cindex "port" "logging remote"


@@ -35938,22 +35974,18 @@ connection is unexpectedly dropped.
 .cindex "log" "local address and port"
 .cindex "TCP/IP" "logging local address and port"
 .cindex "interface" "logging"
 .cindex "log" "local address and port"
 .cindex "TCP/IP" "logging local address and port"
 .cindex "interface" "logging"

-.new

 &%outgoing_interface%&: If &%incoming_interface%& is turned on, then the
 interface on which a message was sent is added to delivery lines as an I= tag
 followed by IP address in square brackets. You can disable this by turning
 off the &%outgoing_interface%& option.
 &%outgoing_interface%&: If &%incoming_interface%& is turned on, then the
 interface on which a message was sent is added to delivery lines as an I= tag
 followed by IP address in square brackets. You can disable this by turning
 off the &%outgoing_interface%& option.

-.wen

 .next
 .cindex "log" "outgoing remote port"
 .cindex "port" "logging outgoint remote"
 .cindex "TCP/IP" "logging ougtoing remote port"
 &%outgoing_port%&: The remote port number is added to delivery log lines (those
 containing => tags) following the IP address.
 .next
 .cindex "log" "outgoing remote port"
 .cindex "port" "logging outgoint remote"
 .cindex "TCP/IP" "logging ougtoing remote port"
 &%outgoing_port%&: The remote port number is added to delivery log lines (those
 containing => tags) following the IP address.

-.new

 The local port is also added if &%incoming_interface%& and
 &%outgoing_interface%& are both enabled.
 The local port is also added if &%incoming_interface%& and
 &%outgoing_interface%& are both enabled.

-.wen

 This option is not included in the default setting, because for most ordinary
 configurations, the remote port number is always 25 (the SMTP port), and the
 local port is a random ephemeral port.
 This option is not included in the default setting, because for most ordinary
 configurations, the remote port number is always 25 (the SMTP port), and the
 local port is a random ephemeral port.


@@ -38078,19 +38110,17 @@ linked to a domain which that entity controls.  It permits reputation to
 be tracked on a per-domain basis, rather than merely upon source IP address.
 DKIM is documented in RFC 4871.
 
 be tracked on a per-domain basis, rather than merely upon source IP address.
 DKIM is documented in RFC 4871.
 

-.new

 DKIM support is compiled into Exim by default if TLS support is present.
 DKIM support is compiled into Exim by default if TLS support is present.

-.wen

 It can be disabled by setting DISABLE_DKIM=yes in &_Local/Makefile_&.
 
 It can be disabled by setting DISABLE_DKIM=yes in &_Local/Makefile_&.
 

-Exim's DKIM implementation allows to
+Exim's DKIM implementation allows for

 .olist
 .olist

-Sign outgoing messages: This function is implemented in the SMTP transport.
+Signing outgoing messages: This function is implemented in the SMTP transport.

 It can co-exist with all other Exim features
 (including transport filters)
 except cutthrough delivery.
 .next
 It can co-exist with all other Exim features
 (including transport filters)
 except cutthrough delivery.
 .next

-Verify signatures in incoming messages: This is implemented by an additional
+Verifying signatures in incoming messages: This is implemented by an additional

 ACL (acl_smtp_dkim), which can be called several times per message, with
 different signature contexts.
 .endlist
 ACL (acl_smtp_dkim), which can be called several times per message, with
 different signature contexts.
 .endlist


@@ -38119,7 +38149,7 @@ senders).
 .section "Signing outgoing messages" "SECDKIMSIGN"
 .cindex "DKIM" "signing"
 
 .section "Signing outgoing messages" "SECDKIMSIGN"
 .cindex "DKIM" "signing"
 

-Signing is implemented by setting private options on the SMTP transport.
+Signing is enabled by setting private options on the SMTP transport.

 These options take (expandable) strings as arguments.
 
 .option dkim_domain smtp string&!! unset
 These options take (expandable) strings as arguments.
 
 .option dkim_domain smtp string&!! unset


@@ -38176,7 +38206,7 @@ used.
 .section "Verifying DKIM signatures in incoming mail" "SECID514"
 .cindex "DKIM" "verification"
 
 .section "Verifying DKIM signatures in incoming mail" "SECID514"
 .cindex "DKIM" "verification"
 

-Verification of DKIM signatures in incoming email is implemented via the
+Verification of DKIM signatures in SMTP incoming email is implemented via the

 &%acl_smtp_dkim%& ACL. By default, this ACL is called once for each
 syntactically(!) correct signature in the incoming message.
 A missing ACL definition defaults to accept.
 &%acl_smtp_dkim%& ACL. By default, this ACL is called once for each
 syntactically(!) correct signature in the incoming message.
 A missing ACL definition defaults to accept.


@@ -38229,6 +38259,7 @@ available (from most to least important):
 The signer that is being evaluated in this ACL run. This can be a domain or
 an identity. This is one of the list items from the expanded main option
 &%dkim_verify_signers%& (see above).
 The signer that is being evaluated in this ACL run. This can be a domain or
 an identity. This is one of the list items from the expanded main option
 &%dkim_verify_signers%& (see above).

+

 .vitem &%$dkim_verify_status%&
 A string describing the general status of the signature. One of
 .ilist
 .vitem &%$dkim_verify_status%&
 A string describing the general status of the signature. One of
 .ilist


@@ -38243,6 +38274,7 @@ available in &%$dkim_verify_reason%&.
 .next
 &%pass%&: The signature passed verification. It is valid.
 .endlist
 .next
 &%pass%&: The signature passed verification. It is valid.
 .endlist

+

 .vitem &%$dkim_verify_reason%&
 A string giving a little bit more detail when &%$dkim_verify_status%& is either
 "fail" or "invalid". One of
 .vitem &%$dkim_verify_reason%&
 A string giving a little bit more detail when &%$dkim_verify_status%& is either
 "fail" or "invalid". One of


@@ -38262,51 +38294,73 @@ could not be verified. This may mean that headers were modified,
 re-written or otherwise changed in a way which is incompatible with
 DKIM verification. It may of course also mean that the signature is forged.
 .endlist
 re-written or otherwise changed in a way which is incompatible with
 DKIM verification. It may of course also mean that the signature is forged.
 .endlist

+

 .vitem &%$dkim_domain%&
 The signing domain. IMPORTANT: This variable is only populated if there is
 an actual signature in the message for the current domain or identity (as
 reflected by &%$dkim_cur_signer%&).
 .vitem &%$dkim_domain%&
 The signing domain. IMPORTANT: This variable is only populated if there is
 an actual signature in the message for the current domain or identity (as
 reflected by &%$dkim_cur_signer%&).

+

 .vitem &%$dkim_identity%&
 The signing identity, if present. IMPORTANT: This variable is only populated
 if there is an actual signature in the message for the current domain or
 identity (as reflected by &%$dkim_cur_signer%&).
 .vitem &%$dkim_identity%&
 The signing identity, if present. IMPORTANT: This variable is only populated
 if there is an actual signature in the message for the current domain or
 identity (as reflected by &%$dkim_cur_signer%&).

+

 .vitem &%$dkim_selector%&
 The key record selector string.
 .vitem &%$dkim_selector%&
 The key record selector string.

+

 .vitem &%$dkim_algo%&
 The algorithm used. One of 'rsa-sha1' or 'rsa-sha256'.
 .vitem &%$dkim_algo%&
 The algorithm used. One of 'rsa-sha1' or 'rsa-sha256'.

+

 .vitem &%$dkim_canon_body%&
 The body canonicalization method. One of 'relaxed' or 'simple'.
 .vitem &%$dkim_canon_body%&
 The body canonicalization method. One of 'relaxed' or 'simple'.

+

 .vitem &%dkim_canon_headers%&
 The header canonicalization method. One of 'relaxed' or 'simple'.
 .vitem &%dkim_canon_headers%&
 The header canonicalization method. One of 'relaxed' or 'simple'.

+

 .vitem &%$dkim_copiedheaders%&
 A transcript of headers and their values which are included in the signature
 (copied from the 'z=' tag of the signature).
 .vitem &%$dkim_copiedheaders%&
 A transcript of headers and their values which are included in the signature
 (copied from the 'z=' tag of the signature).

+.new
+Note that RFC6376 requires that verification fail if the From: header is
+not included in the signature.  Exim does not enforce this; sites wishing
+strict enforcement should code the check explicitly.
+.wen
+

 .vitem &%$dkim_bodylength%&
 The number of signed body bytes. If zero ("0"), the body is unsigned. If no
 limit was set by the signer, "9999999999999" is returned. This makes sure
 that this variable always expands to an integer value.
 .vitem &%$dkim_bodylength%&
 The number of signed body bytes. If zero ("0"), the body is unsigned. If no
 limit was set by the signer, "9999999999999" is returned. This makes sure
 that this variable always expands to an integer value.

+

 .vitem &%$dkim_created%&
 UNIX timestamp reflecting the date and time when the signature was created.
 When this was not specified by the signer, "0" is returned.
 .vitem &%$dkim_created%&
 UNIX timestamp reflecting the date and time when the signature was created.
 When this was not specified by the signer, "0" is returned.

+

 .vitem &%$dkim_expires%&
 UNIX timestamp reflecting the date and time when the signer wants the
 signature to be treated as "expired". When this was not specified by the
 signer, "9999999999999" is returned. This makes it possible to do useful
 integer size comparisons against this value.
 .vitem &%$dkim_expires%&
 UNIX timestamp reflecting the date and time when the signer wants the
 signature to be treated as "expired". When this was not specified by the
 signer, "9999999999999" is returned. This makes it possible to do useful
 integer size comparisons against this value.

+

 .vitem &%$dkim_headernames%&
 A colon-separated list of names of headers included in the signature.
 .vitem &%$dkim_headernames%&
 A colon-separated list of names of headers included in the signature.

+

 .vitem &%$dkim_key_testing%&
 "1" if the key record has the "testing" flag set, "0" if not.
 .vitem &%$dkim_key_testing%&
 "1" if the key record has the "testing" flag set, "0" if not.

+

 .vitem &%$dkim_key_nosubdomains%&
 "1" if the key record forbids subdomaining, "0" otherwise.
 .vitem &%$dkim_key_nosubdomains%&
 "1" if the key record forbids subdomaining, "0" otherwise.

+

 .vitem &%$dkim_key_srvtype%&
 Service type (tag s=) from the key record. Defaults to "*" if not specified
 in the key record.
 .vitem &%$dkim_key_srvtype%&
 Service type (tag s=) from the key record. Defaults to "*" if not specified
 in the key record.

+

 .vitem &%$dkim_key_granularity%&
 Key granularity (tag g=) from the key record. Defaults to "*" if not specified
 in the key record.
 .vitem &%$dkim_key_granularity%&
 Key granularity (tag g=) from the key record. Defaults to "*" if not specified
 in the key record.

+

 .vitem &%$dkim_key_notes%&
 Notes from the key record (tag n=).
 .vitem &%$dkim_key_notes%&
 Notes from the key record (tag n=).

+

 .vitem &%$dkim_key_length%&
 Number of bits in the key.
 .endlist
 .vitem &%$dkim_key_length%&
 Number of bits in the key.
 .endlist


@@ -38353,7 +38407,6 @@ for more information of what they mean.
 .cindex "proxy support"
 .cindex "proxy" "access via"
 
 .cindex "proxy support"
 .cindex "proxy" "access via"
 

-.new

 A proxy is an intermediate system through which communication is passed.
 Proxies may provide a security, availability or load-distribution function.
 
 A proxy is an intermediate system through which communication is passed.
 Proxies may provide a security, availability or load-distribution function.
 


@@ -38387,18 +38440,20 @@ Use of a proxy is enabled by setting the &%hosts_proxy%&
 main configuration option to a hostlist; connections from these
 hosts will use Proxy Protocol.
 
 main configuration option to a hostlist; connections from these
 hosts will use Proxy Protocol.
 

+.new

 The following expansion variables are usable
 (&"internal"& and &"external"& here refer to the interfaces
 of the proxy):
 .display
 The following expansion variables are usable
 (&"internal"& and &"external"& here refer to the interfaces
 of the proxy):
 .display

-&'proxy_host_address   '& internal IP address of the proxy
-&'proxy_host_port      '& internal TCP port of the proxy
-&'proxy_target_address '& external IP address of the proxy
-&'proxy_target_port    '& external TCP port of the proxy
+&'proxy_external_address   '& IP of host being proxied or IP of remote interface of proxy
+&'proxy_external_port      '& Port of host being proxied or Port on remote interface of proxy
+&'proxy_local_address '& IP of proxy server inbound or IP of local interface of proxy
+&'proxy_local_port    '& Port of proxy server inbound or Port on local interface of proxy

 &'proxy_session        '& boolean: SMTP connection via proxy
 .endd
 &'proxy_session        '& boolean: SMTP connection via proxy
 .endd

-If &$proxy_session$& is set but &$proxy_host_address$& is empty
+If &$proxy_session$& is set but &$proxy_external_address$& is empty

 there was a protocol error.
 there was a protocol error.

+.wen

 
 Since the real connections are all coming from the proxy, and the
 per host connection tracking is done before Proxy Protocol is
 
 Since the real connections are all coming from the proxy, and the
 per host connection tracking is done before Proxy Protocol is


@@ -38491,7 +38546,6 @@ overall connection applies to the set of proxied attempts.
 To log the (local) IP of a proxy in the incoming or delivery logline,
 add &"+proxy"& to the &%log_selector%& option.
 This will add a component tagged with &"PRX="& to the line.
 To log the (local) IP of a proxy in the incoming or delivery logline,
 add &"+proxy"& to the &%log_selector%& option.
 This will add a component tagged with &"PRX="& to the line.

-.wen

 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////
 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////


@@ -38503,7 +38557,6 @@ This will add a component tagged with &"PRX="& to the line.
 .cindex i18n
 .cindex UTF-8 "mail name handling"
 
 .cindex i18n
 .cindex UTF-8 "mail name handling"
 

-.new

 Exim has support for Internationalised mail names.
 To include this it must be built with SUPPORT_I18N and the libidn library.
 Standards supported are RFCs 2060, 5890, 6530 and 6533.
 Exim has support for Internationalised mail names.
 To include this it must be built with SUPPORT_I18N and the libidn library.
 Standards supported are RFCs 2060, 5890, 6530 and 6533.


@@ -38539,7 +38592,7 @@ form of the name.
 Log lines and Received-by: header lines will acquire a "utf8"
 prefix on the protocol element, eg. utf8esmtp.
 
 Log lines and Received-by: header lines will acquire a "utf8"
 prefix on the protocol element, eg. utf8esmtp.
 

-The following expansion operator can be used:
+The following expansion operators can be used:

 .code
 ${utf8_domain_to_alabel:str}
 ${utf8_domain_from_alabel:str}
 .code
 ${utf8_domain_to_alabel:str}
 ${utf8_domain_from_alabel:str}


@@ -38612,7 +38665,6 @@ Examples:
 Note that the source charset setting is vital, and also that characters
 must be representable in UTF-16.
 
 Note that the source charset setting is vital, and also that characters
 must be representable in UTF-16.
 

-.wen

 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////
 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////


@@ -38621,7 +38673,6 @@ must be representable in UTF-16.
          "Events"
 .cindex events
 
          "Events"
 .cindex events
 

-.new

 The events mechanism in Exim can be used to intercept processing at a number
 of points.  It was originally invented to giave a way to do customised logging
 actions (for example, to a database) but can also be used to modify some
 The events mechanism in Exim can be used to intercept processing at a number
 of points.  It was originally invented to giave a way to do customised logging
 actions (for example, to a database) but can also be used to modify some


@@ -38727,7 +38778,6 @@ For tls:cert events, if GnuTLS is in use this will trigger only per
 chain element received on the connection.
 For OpenSSL it will trigger for every chain element including those
 loaded locally.
 chain element received on the connection.
 For OpenSSL it will trigger for every chain element including those
 loaded locally.

-.wen

 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////
 
 . ////////////////////////////////////////////////////////////////////////////
 . ////////////////////////////////////////////////////////////////////////////