Fix listquote expansion item to handle empty-string input

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index f1940bb1ef31b9057c177f7130b13dca5aa79f13..2774f6d4db2693d70b0ed2635e245efb01cffcf7 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -5905,13 +5905,13 @@ messages that are submitted by SMTP from local processes using the standard
 input and output (that is, not using TCP/IP). A number of MUAs operate in this
 manner.
 .code
 input and output (that is, not using TCP/IP). A number of MUAs operate in this
 manner.
 .code

-deny    message       = Restricted characters in address
-        domains       = +local_domains
+deny    domains       = +local_domains

         local_parts   = ^[.] : ^.*[@%!/|]
         local_parts   = ^[.] : ^.*[@%!/|]

+        message       = Restricted characters in address

 
 

-deny    message       = Restricted characters in address
-        domains       = !+local_domains
+deny    domains       = !+local_domains

         local_parts   = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
         local_parts   = ^[./|] : ^.*[@%!] : ^.*/\\.\\./

+        message       = Restricted characters in address

 .endd
 These statements are concerned with local parts that contain any of the
 characters &"@"&, &"%"&, &"!"&, &"/"&, &"|"&, or dots in unusual places.
 .endd
 These statements are concerned with local parts that contain any of the
 characters &"@"&, &"%"&, &"!"&, &"/"&, &"|"&, or dots in unusual places.


@@ -6015,10 +6015,10 @@ require verify = recipient
 This statement requires the recipient address to be verified; if verification
 fails, the address is rejected.
 .code
 This statement requires the recipient address to be verified; if verification
 fails, the address is rejected.
 .code

-# deny    message     = rejected because $sender_host_address \
+# deny    dnslists    = black.list.example
+#         message     = rejected because $sender_host_address \

 #                       is in a black list at $dnslist_domain\n\
 #                       $dnslist_text
 #                       is in a black list at $dnslist_domain\n\
 #                       $dnslist_text

-#         dnslists    = black.list.example

 #
 # warn    dnslists    = black.list.example
 #         add_header  = X-Warning: $sender_host_address is in \
 #
 # warn    dnslists    = black.list.example
 #         add_header  = X-Warning: $sender_host_address is in \


@@ -6663,6 +6663,13 @@ If the value of &$sender_host_address$& is 192.168.5.6, expansion of the
 first &%domains%& setting above generates the second setting, which therefore
 causes a second lookup to occur.
 
 first &%domains%& setting above generates the second setting, which therefore
 causes a second lookup to occur.
 

+.new
+The lookup type may optionally be followed by a comma
+and a comma-separated list of options.
+Each option is a &"name=value"& pair.
+Whether an option is meaningful depands on the lookup type.
+.wen
+

 The rest of this chapter describes the different lookup types that are
 available. Any of them can be used in any part of the configuration where a
 lookup is permitted.
 The rest of this chapter describes the different lookup types that are
 available. Any of them can be used in any part of the configuration where a
 lookup is permitted.


@@ -6680,6 +6687,13 @@ lookup to succeed. The lookup type determines how the file is searched.
 .new
 .cindex "tainted data" "single-key lookups"
 The file string may not be tainted
 .new
 .cindex "tainted data" "single-key lookups"
 The file string may not be tainted

+
+.cindex "tainted data" "de-tainting"
+All single-key lookups support the option &"ret=key"&.
+If this is given and the lookup
+(either underlying implementation or cached value)
+returns data, the result is replaced with a non-tainted
+version of the lookup key.

 .wen
 .next
 .cindex "query-style lookup" "definition of"
 .wen
 .next
 .cindex "query-style lookup" "definition of"


@@ -10871,8 +10885,7 @@ a decimal representation of the answer (without &"K"&, &"M"& or &"G"&). For exam
 
 As a more realistic example, in an ACL you might have
 .code
 
 As a more realistic example, in an ACL you might have
 .code

-deny   message = Too many bad recipients
-       condition =                    \
+deny   condition =                    \

          ${if and {                   \
            {>{$rcpt_count}{10}}       \
            {                          \
          ${if and {                   \
            {>{$rcpt_count}{10}}       \
            {                          \


@@ -10881,6 +10894,7 @@ deny   message = Too many bad recipients
              {${eval:$rcpt_count/2}}  \
            }                          \
          }{yes}{no}}
              {${eval:$rcpt_count/2}}  \
            }                          \
          }{yes}{no}}

+       message = Too many bad recipients

 .endd
 The condition is true if there have been more than 10 RCPT commands and
 fewer than half of them have resulted in a valid recipient.
 .endd
 The condition is true if there have been more than 10 RCPT commands and
 fewer than half of them have resulted in a valid recipient.


@@ -12311,13 +12325,6 @@ 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 &$dmarc_domain_policy$& &&&
-       &$dmarc_status$& &&&
-       &$dmarc_status_text$& &&&
-       &$dmarc_used_domains$&
-Results of DMARC verification.
-For details see section &<<SECDMARC>>&.
-

 .vitem &$dkim_verify_status$&
 Results of DKIM verification.
 For details see section &<<SECDKIMVFY>>&.
 .vitem &$dkim_verify_status$&
 Results of DKIM verification.
 For details see section &<<SECDKIMVFY>>&.


@@ -12350,6 +12357,13 @@ When a message has been received this variable contains
 a colon-separated list of signer domains and identities for the message.
 For details see section &<<SECDKIMVFY>>&.
 
 a colon-separated list of signer domains and identities for the message.
 For details see section &<<SECDKIMVFY>>&.
 

+.vitem &$dmarc_domain_policy$& &&&
+       &$dmarc_status$& &&&
+       &$dmarc_status_text$& &&&
+       &$dmarc_used_domains$&
+Results of DMARC verification.
+For details see section &<<SECDMARC>>&.
+

 .vitem &$dnslist_domain$& &&&
        &$dnslist_matched$& &&&
        &$dnslist_text$& &&&
 .vitem &$dnslist_domain$& &&&
        &$dnslist_matched$& &&&
        &$dnslist_text$& &&&


@@ -12521,7 +12535,7 @@ result of the lookup is made available in the &$host_data$& variable. This
 allows you, for example, to do things like this:
 .code
 deny  hosts = net-lsearch;/some/file
 allows you, for example, to do things like this:
 .code
 deny  hosts = net-lsearch;/some/file

-message = $host_data
+      message = $host_data

 .endd
 .vitem &$host_lookup_deferred$&
 .cindex "host name" "lookup, failure of"
 .endd
 .vitem &$host_lookup_deferred$&
 .cindex "host name" "lookup, failure of"


@@ -12873,9 +12887,9 @@ header and the body).
 
 Here is an example of the use of this variable in a DATA ACL:
 .code
 
 Here is an example of the use of this variable in a DATA ACL:
 .code

-deny message   = Too many lines in message header
-     condition = \
+deny condition = \

       ${if <{250}{${eval:$message_linecount - $body_linecount}}}
       ${if <{250}{${eval:$message_linecount - $body_linecount}}}

+     message   = Too many lines in message header

 .endd
 In the MAIL and RCPT ACLs, the value is zero because at that stage the
 message has not yet been received.
 .endd
 In the MAIL and RCPT ACLs, the value is zero because at that stage the
 message has not yet been received.


@@ -14564,6 +14578,7 @@ listed in more than one group.
 .row &%percent_hack_domains%&        "recognize %-hack for these domains"
 .row &%spamd_address%&               "set interface to SpamAssassin"
 .row &%strict_acl_vars%&             "object to unset ACL variables"
 .row &%percent_hack_domains%&        "recognize %-hack for these domains"
 .row &%spamd_address%&               "set interface to SpamAssassin"
 .row &%strict_acl_vars%&             "object to unset ACL variables"

+.row &%spf_smtp_comment_template%&   "template for &$spf_smtp_comment$&"

 .endtable
 
 
 .endtable
 
 


@@ -14650,6 +14665,9 @@ See also the &'Policy controls'& section above.
 .row &%dkim_verify_keytypes%&        "DKIM key types accepted for signatures"
 .row &%dkim_verify_min_keysizes%&    "DKIM key sizes accepted for signatures"
 .row &%dkim_verify_signers%&         "DKIM domains for which DKIM ACL is run"
 .row &%dkim_verify_keytypes%&        "DKIM key types accepted for signatures"
 .row &%dkim_verify_min_keysizes%&    "DKIM key sizes accepted for signatures"
 .row &%dkim_verify_signers%&         "DKIM domains for which DKIM ACL is run"

+.row &%dmarc_forensic_sender%&       "DMARC sender for report messages"
+.row &%dmarc_history_file%&          "DMARC results log"
+.row &%dmarc_tld_file%&              "DMARC toplevel domains file"

 .row &%host_lookup%&                 "host name looked up for these hosts"
 .row &%host_lookup_order%&           "order of DNS and local name lookups"
 .row &%recipient_unqualified_hosts%& "may send unqualified recipients"
 .row &%host_lookup%&                 "host name looked up for these hosts"
 .row &%host_lookup_order%&           "order of DNS and local name lookups"
 .row &%recipient_unqualified_hosts%& "may send unqualified recipients"


@@ -15454,6 +15472,14 @@ the ACL once for each signature in the message.
 See section &<<SECDKIMVFY>>&.
 
 
 See section &<<SECDKIMVFY>>&.
 
 

+.option dmarc_forensic_sender main string&!! unset
+.option dmarc_history_file main string unset
+.option dmarc_tld_file main string unset
+.cindex DMARC "main section options"
+These options control DMARC processing.
+See section &<<SECDMARC>>& for details.
+
+

 .option dns_again_means_nonexist main "domain list&!!" unset
 .cindex "DNS" "&""try again""& response; overriding"
 DNS lookups give a &"try again"& response for the DNS errors
 .option dns_again_means_nonexist main "domain list&!!" unset
 .cindex "DNS" "&""try again""& response; overriding"
 DNS lookups give a &"try again"& response for the DNS errors


@@ -17736,6 +17762,48 @@ See section &<<SECTscanspamass>>& for more details.
 This option is available when Exim is compiled with SPF support.
 See section &<<SECSPF>>& for more details.
 
 This option is available when Exim is compiled with SPF support.
 See section &<<SECSPF>>& for more details.
 

+.new
+.option spf_smtp_comment_template main string&!! "Please%_see%_http://www.open-spf.org/Why"
+This option is available when Exim is compiled with SPF support.  It
+allows the customisation of the SMTP comment that the SPF library
+generates.  You are strongly encouraged to link to your own explanative
+site. The template must not contain spaces. If you need spaces in the
+output, use the proper placeholder. If libspf2 can not parse the
+template, it uses a built-in default broken link. The following placeholders
+(along with Exim variables (but see below)) are allowed in the template:
+.ilist
+&*%_*&: A space.
+.next
+&*%{L}*&: Envelope sender's local part.
+.next
+&*%{S}*&: Envelope sender.
+.next
+&*%{O}*&: Envelope sender's domain.
+.next
+&*%{D}*&: Current(?) domain.
+.next
+&*%{I}*&: SMTP client Ip.
+.next
+&*%{C}*&: SMTP client pretty IP.
+.next
+&*%{T}*&: Epoch time (UTC).
+.next
+&*%{P}*&: SMTP client domain name.
+.next
+&*%{V}*&: IP version.
+.next
+&*%{H}*&: EHLO/HELO domain.
+.next
+&*%{R}*&: Receiving domain.
+.endlist
+The capitalized placeholders do proper URL encoding, if you use them
+lowercased, no encoding takes place.  This list was compiled from the
+libspf2 sources.
+
+A note on using Exim variables: As
+currently the SPF library is initialized before the SMTP EHLO phase,
+the variables useful for expansion are quite limited.
+.wen

 
 
 .option split_spool_directory main boolean false
 
 
 .option split_spool_directory main boolean false


@@ -30227,8 +30295,8 @@ The &%message%& modifier operates exactly as it does for &%accept%&.
 &%drop%&: This verb behaves like &%deny%&, except that an SMTP connection is
 forcibly closed after the 5&'xx'& error message has been sent. For example:
 .code
 &%drop%&: This verb behaves like &%deny%&, except that an SMTP connection is
 forcibly closed after the 5&'xx'& error message has been sent. For example:
 .code

-drop   message   = I don't take more than 20 RCPTs
-       condition = ${if > {$rcpt_count}{20}}
+drop   condition = ${if > {$rcpt_count}{20}}
+       message   = I don't take more than 20 RCPTs

 .endd
 There is no difference between &%deny%& and &%drop%& for the connect-time ACL.
 The connection is always dropped after sending a 550 response.
 .endd
 There is no difference between &%deny%& and &%drop%& for the connect-time ACL.
 The connection is always dropped after sending a 550 response.


@@ -31464,7 +31532,7 @@ of the lookup is made available in the &$host_data$& variable. This
 allows you, for example, to set up a statement like this:
 .code
 deny  hosts = net-lsearch;/some/file
 allows you, for example, to set up a statement like this:
 .code
 deny  hosts = net-lsearch;/some/file

-message = $host_data
+      message = $host_data

 .endd
 which gives a custom error message for each denied host.
 
 .endd
 which gives a custom error message for each denied host.
 


@@ -31608,8 +31676,8 @@ section &<<SECTaddressverification>>& (callouts are described in section
 condition to restrict it to bounce messages only:
 .code
 deny    senders = :
 condition to restrict it to bounce messages only:
 .code
 deny    senders = :

-        message = A valid sender header is required for bounces

        !verify  = header_sender
        !verify  = header_sender

+        message = A valid sender header is required for bounces

 .endd
 
 .vitem &*verify&~=&~header_syntax*&
 .endd
 
 .vitem &*verify&~=&~header_syntax*&


@@ -31791,8 +31859,8 @@ Testing the list of domains stops as soon as a match is found. If you want to
 warn for one list and block for another, you can use two different statements:
 .code
 deny  dnslists = blackholes.mail-abuse.org
 warn for one list and block for another, you can use two different statements:
 .code
 deny  dnslists = blackholes.mail-abuse.org

-warn  message  = X-Warn: sending host is on dialups list
-      dnslists = dialups.mail-abuse.org
+warn  dnslists = dialups.mail-abuse.org
+      message  = X-Warn: sending host is on dialups list

 .endd
 .cindex caching "of dns lookup"
 .cindex DNS TTL
 .endd
 .cindex caching "of dns lookup"
 .cindex DNS TTL


@@ -31833,8 +31901,8 @@ addresses (see, e.g., the &'domain based zones'& link at
 with these lists. You can change the name that is looked up in a DNS list by
 listing it after the domain name, introduced by a slash. For example,
 .code
 with these lists. You can change the name that is looked up in a DNS list by
 listing it after the domain name, introduced by a slash. For example,
 .code

-deny  message  = Sender's domain is listed at $dnslist_domain
-      dnslists = dsn.rfc-ignorant.org/$sender_address_domain
+deny  dnslists = dsn.rfc-ignorant.org/$sender_address_domain
+      message  = Sender's domain is listed at $dnslist_domain

 .endd
 This particular example is useful only in ACLs that are obeyed after the
 RCPT or DATA commands, when a sender address is available. If (for
 .endd
 This particular example is useful only in ACLs that are obeyed after the
 RCPT or DATA commands, when a sender address is available. If (for


@@ -31898,13 +31966,13 @@ dnslists = black.list.tld/a.domain::b.domain
 However, when the data for the list is obtained from a lookup, the second form
 is usually much more convenient. Consider this example:
 .code
 However, when the data for the list is obtained from a lookup, the second form
 is usually much more convenient. Consider this example:
 .code

-deny message  = The mail servers for the domain \
+deny dnslists = sbl.spamhaus.org/<|${lookup dnsdb {>|a=<|\
+                                   ${lookup dnsdb {>|mxh=\
+                                   $sender_address_domain} }} }
+     message  = The mail servers for the domain \

                 $sender_address_domain \
                 are listed at $dnslist_domain ($dnslist_value); \
                 see $dnslist_text.
                 $sender_address_domain \
                 are listed at $dnslist_domain ($dnslist_value); \
                 see $dnslist_text.

-     dnslists = sbl.spamhaus.org/<|${lookup dnsdb {>|a=<|\
-                                   ${lookup dnsdb {>|mxh=\
-                                   $sender_address_domain} }} }

 .endd
 Note the use of &`>|`& in the dnsdb lookup to specify the separator for
 multiple DNS records. The inner dnsdb lookup produces a list of MX hosts
 .endd
 Note the use of &`>|`& in the dnsdb lookup to specify the separator for
 multiple DNS records. The inner dnsdb lookup produces a list of MX hosts


@@ -31977,7 +32045,7 @@ very meaningful. See section &<<SECTmordetinf>>& for a way of obtaining more
 information.
 
 You can use the DNS list variables in &%message%& or &%log_message%& modifiers
 information.
 
 You can use the DNS list variables in &%message%& or &%log_message%& modifiers

-&-- although these appear before the condition in the ACL, they are not
+&-- even if these appear before the condition in the ACL, they are not

 expanded until after it has failed. For example:
 .code
 deny    hosts = !+local_networks
 expanded until after it has failed. For example:
 .code
 deny    hosts = !+local_networks


@@ -32163,12 +32231,12 @@ restrictions, to get the TXT record. As a byproduct of this, there is also
 a check that the IP being tested is indeed on the first list. The first
 domain is the one that is put in &$dnslist_domain$&. For example:
 .code
 a check that the IP being tested is indeed on the first list. The first
 domain is the one that is put in &$dnslist_domain$&. For example:
 .code

-deny message  = \
-         rejected because $sender_host_address is blacklisted \
-         at $dnslist_domain\n$dnslist_text
-       dnslists = \
+deny   dnslists = \

          sbl.spamhaus.org,sbl-xbl.spamhaus.org=127.0.0.2 : \
          dul.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.10
          sbl.spamhaus.org,sbl-xbl.spamhaus.org=127.0.0.2 : \
          dul.dnsbl.sorbs.net,dnsbl.sorbs.net=127.0.0.10

+       message  = \
+         rejected because $sender_host_address is blacklisted \
+         at $dnslist_domain\n$dnslist_text

 .endd
 For the first blacklist item, this starts by doing a lookup in
 &'sbl-xbl.spamhaus.org'& and testing for a 127.0.0.2 return. If there is a
 .endd
 For the first blacklist item, this starts by doing a lookup in
 &'sbl-xbl.spamhaus.org'& and testing for a 127.0.0.2 return. If there is a


@@ -32358,12 +32426,12 @@ new rate.
 .code
 acl_check_connect:
  deny ratelimit = 100 / 5m / readonly
 .code
 acl_check_connect:
  deny ratelimit = 100 / 5m / readonly

-    log_message = RATE CHECK: $sender_rate/$sender_rate_period \
+      log_message = RATE CHECK: $sender_rate/$sender_rate_period \

                   (max $sender_rate_limit)
 # ...
 acl_check_mail:
  warn ratelimit = 100 / 5m / strict
                   (max $sender_rate_limit)
 # ...
 acl_check_mail:
  warn ratelimit = 100 / 5m / strict

-    log_message = RATE UPDATE: $sender_rate/$sender_rate_period \
+      log_message = RATE UPDATE: $sender_rate/$sender_rate_period \

                   (max $sender_rate_limit)
 .endd
 
                   (max $sender_rate_limit)
 .endd
 


@@ -32473,16 +32541,16 @@ deny authenticated = *
      ratelimit = 100 / 1d / strict / $authenticated_id
 
 # System-wide rate limit
      ratelimit = 100 / 1d / strict / $authenticated_id
 
 # System-wide rate limit

-defer message = Sorry, too busy. Try again later.
-     ratelimit = 10 / 1s / $primary_hostname
+defer ratelimit = 10 / 1s / $primary_hostname
+      message = Sorry, too busy. Try again later.

 
 # Restrict incoming rate from each host, with a default
 # set using a macro and special cases looked up in a table.
 
 # Restrict incoming rate from each host, with a default
 # set using a macro and special cases looked up in a table.

-defer message = Sender rate exceeds $sender_rate_limit \
-               messages per $sender_rate_period
-     ratelimit = ${lookup {$sender_host_address} \
+defer ratelimit = ${lookup {$sender_host_address} \

                    cdb {DB/ratelimits.cdb} \
                    {$value} {RATELIMIT} }
                    cdb {DB/ratelimits.cdb} \
                    {$value} {RATELIMIT} }

+      message = Sender rate exceeds $sender_rate_limit \
+               messages per $sender_rate_period

 .endd
 &*Warning*&: If you have a busy server with a lot of &%ratelimit%& tests,
 especially with the &%per_rcpt%& option, you may suffer from a performance
 .endd
 &*Warning*&: If you have a busy server with a lot of &%ratelimit%& tests,
 especially with the &%per_rcpt%& option, you may suffer from a performance


@@ -33071,16 +33139,16 @@ list called &%batv_senders%&. Then, in the ACL for RCPT commands, you could
 use this:
 .code
 # Bounces: drop unsigned addresses for BATV senders
 use this:
 .code
 # Bounces: drop unsigned addresses for BATV senders

-deny message = This address does not send an unsigned reverse path
-     senders = :
+deny senders = :

      recipients = +batv_senders
      recipients = +batv_senders

+     message = This address does not send an unsigned reverse path

 
 # Bounces: In case of prvs-signed address, check signature.
 
 # Bounces: In case of prvs-signed address, check signature.

-deny message = Invalid reverse path signature.
-     senders = :
+deny senders = :

      condition  = ${prvscheck {$local_part@$domain}\
                   {PRVSCHECK_SQL}{1}}
      !condition = $prvscheck_result
      condition  = ${prvscheck {$local_part@$domain}\
                   {PRVSCHECK_SQL}{1}}
      !condition = $prvscheck_result

+     message = Invalid reverse path signature.

 .endd
 The first statement rejects recipients for bounce messages that are addressed
 to plain BATV sender addresses, because it is known that BATV senders do not
 .endd
 The first statement rejects recipients for bounce messages that are addressed
 to plain BATV sender addresses, because it is known that BATV senders do not


@@ -33617,13 +33685,13 @@ imposed by your anti-virus scanner.
 
 Here is a very simple scanning example:
 .code
 
 Here is a very simple scanning example:
 .code

-deny message = This message contains malware ($malware_name)
-     malware = *
+deny malware = *
+     message = This message contains malware ($malware_name)

 .endd
 The next example accepts messages when there is a problem with the scanner:
 .code
 .endd
 The next example accepts messages when there is a problem with the scanner:
 .code

-deny message = This message contains malware ($malware_name)
-     malware = */defer_ok
+deny malware = */defer_ok
+     message = This message contains malware ($malware_name)

 .endd
 The next example shows how to use an ACL variable to scan with both sophie and
 aveserver. It assumes you have set:
 .endd
 The next example shows how to use an ACL variable to scan with both sophie and
 aveserver. It assumes you have set:


@@ -33632,13 +33700,13 @@ av_scanner = $acl_m0
 .endd
 in the main Exim configuration.
 .code
 .endd
 in the main Exim configuration.
 .code

-deny message = This message contains malware ($malware_name)
-     set acl_m0 = sophie
+deny set acl_m0 = sophie

      malware = *
      malware = *

+     message = This message contains malware ($malware_name)

 
 

-deny message = This message contains malware ($malware_name)
-     set acl_m0 = aveserver
+deny set acl_m0 = aveserver

      malware = *
      malware = *

+     message = This message contains malware ($malware_name)

 .endd
 
 
 .endd
 
 


@@ -33767,8 +33835,8 @@ is set to record the actual address used.
 .section "Calling SpamAssassin from an Exim ACL" "SECID206"
 Here is a simple example of the use of the &%spam%& condition in a DATA ACL:
 .code
 .section "Calling SpamAssassin from an Exim ACL" "SECID206"
 Here is a simple example of the use of the &%spam%& condition in a DATA ACL:
 .code

-deny message = This message was classified as SPAM
-     spam = joe
+deny spam = joe
+     message = This message was classified as SPAM

 .endd
 The right-hand side of the &%spam%& condition specifies a name. This is
 relevant if you have set up multiple SpamAssassin profiles. If you do not want
 .endd
 The right-hand side of the &%spam%& condition specifies a name. This is
 relevant if you have set up multiple SpamAssassin profiles. If you do not want


@@ -33800,9 +33868,9 @@ large ones may cause significant performance degradation. As most spam messages
 are quite small, it is recommended that you do not scan the big ones. For
 example:
 .code
 are quite small, it is recommended that you do not scan the big ones. For
 example:
 .code

-deny message = This message was classified as SPAM
-     condition = ${if < {$message_size}{10K}}
+deny condition = ${if < {$message_size}{10K}}

      spam = nobody
      spam = nobody

+     message = This message was classified as SPAM

 .endd
 
 The &%spam%& condition returns true if the threshold specified in the user's
 .endd
 
 The &%spam%& condition returns true if the threshold specified in the user's


@@ -33860,8 +33928,8 @@ failed. If you want to treat DEFER as FAIL (to pass on to the next ACL
 statement block), append &`/defer_ok`& to the right-hand side of the
 spam condition, like this:
 .code
 statement block), append &`/defer_ok`& to the right-hand side of the
 spam condition, like this:
 .code

-deny message = This message was classified as SPAM
-     spam    = joe/defer_ok
+deny spam    = joe/defer_ok
+     message = This message was classified as SPAM

 .endd
 This causes messages to be accepted even if there is a problem with &%spamd%&.
 
 .endd
 This causes messages to be accepted even if there is a problem with &%spamd%&.
 


@@ -33879,9 +33947,9 @@ warn  spam = nobody
       add_header = Subject: *SPAM* $h_Subject:
 
 # reject spam at high scores (> 12)
       add_header = Subject: *SPAM* $h_Subject:
 
 # reject spam at high scores (> 12)

-deny  message = This message scored $spam_score spam points.
-      spam = nobody:true
+deny  spam = nobody:true

       condition = ${if >{$spam_score_int}{120}{1}{0}}
       condition = ${if >{$spam_score_int}{120}{1}{0}}

+      message = This message scored $spam_score spam points.

 .endd
 
 
 .endd
 
 


@@ -34085,10 +34153,10 @@ As an example, the following will ban &"HTML mail"& (including that sent with
 alternative plain text), while allowing HTML files to be attached. HTML
 coverletter mail attached to non-HTML coverletter mail will also be allowed:
 .code
 alternative plain text), while allowing HTML files to be attached. HTML
 coverletter mail attached to non-HTML coverletter mail will also be allowed:
 .code

-deny message = HTML mail is not accepted here
-!condition = $mime_is_rfc822
-condition = $mime_is_coverletter
-condition = ${if eq{$mime_content_type}{text/html}{1}{0}}
+deny !condition = $mime_is_rfc822
+     condition = $mime_is_coverletter
+     condition = ${if eq{$mime_content_type}{text/html}{1}{0}}
+     message = HTML mail is not accepted here

 .endd
 
 .vitem &$mime_is_multipart$&
 .endd
 
 .vitem &$mime_is_multipart$&


@@ -34141,8 +34209,8 @@ expanded before being used, you must also escape dollar signs and backslashes
 with more backslashes, or use the &`\N`& facility to disable expansion.
 Here is a simple example that contains two regular expressions:
 .code
 with more backslashes, or use the &`\N`& facility to disable expansion.
 Here is a simple example that contains two regular expressions:
 .code

-deny message = contains blacklisted regex ($regex_match_string)
-     regex = [Mm]ortgage : URGENT BUSINESS PROPOSAL
+deny regex = [Mm]ortgage : URGENT BUSINESS PROPOSAL
+     message = contains blacklisted regex ($regex_match_string)

 .endd
 The conditions returns true if any one of the regular expressions matches. The
 &$regex_match_string$& expansion variable is then set up and contains the
 .endd
 The conditions returns true if any one of the regular expressions matches. The
 &$regex_match_string$& expansion variable is then set up and contains the


@@ -40873,10 +40941,10 @@ verb to a group of domains or identities. For example:
 
 .code
 # Warn when Mail purportedly from GMail has no gmail signature
 
 .code
 # Warn when Mail purportedly from GMail has no gmail signature

-warn log_message = GMail sender without gmail.com DKIM signature
-     sender_domains = gmail.com
+warn sender_domains = gmail.com

      dkim_signers = gmail.com
      dkim_status = none
      dkim_signers = gmail.com
      dkim_status = none

+     log_message = GMail sender without gmail.com DKIM signature

 .endd
 
 Note that the above does not check for a total lack of DKIM signing;
 .endd
 
 Note that the above does not check for a total lack of DKIM signing;


@@ -40888,10 +40956,10 @@ results against the actual result of verification. This is typically used
 to restrict an ACL verb to a list of verification outcomes, for example:
 
 .code
 to restrict an ACL verb to a list of verification outcomes, for example:
 
 .code

-deny message = Mail from Paypal with invalid/missing signature
-     sender_domains = paypal.com:paypal.de
+deny sender_domains = paypal.com:paypal.de

      dkim_signers = paypal.com:paypal.de
      dkim_status = none:invalid:fail
      dkim_signers = paypal.com:paypal.de
      dkim_status = none:invalid:fail

+     message = Mail from Paypal with invalid/missing signature

 .endd
 
 The possible status keywords are: 'none','invalid','fail' and 'pass'. Please
 .endd
 
 The possible status keywords are: 'none','invalid','fail' and 'pass'. Please


@@ -40975,13 +41043,16 @@ deny spf = fail
      message = $sender_host_address is not allowed to send mail from \
                ${if def:sender_address_domain \
                     {$sender_address_domain}{$sender_helo_name}}.  \
      message = $sender_host_address is not allowed to send mail from \
                ${if def:sender_address_domain \
                     {$sender_address_domain}{$sender_helo_name}}.  \

-               Please see http://www.open-spf.org/Why?scope=\
-               ${if def:sender_address_domain {mfrom}{helo}};\
+               Please see http://www.open-spf.org/Why;\

                identity=${if def:sender_address_domain \
                              {$sender_address}{$sender_helo_name}};\
                ip=$sender_host_address
 .endd
 
                identity=${if def:sender_address_domain \
                              {$sender_address}{$sender_helo_name}};\
                ip=$sender_host_address
 .endd
 

+Note: The above mentioned URL may not be as helpful as expected. You are
+encouraged to replace the link with a link to a site with more
+explanations.
+

 When the spf condition has run, it sets up several expansion
 variables:
 
 When the spf condition has run, it sets up several expansion
 variables:
 


@@ -41016,8 +41087,13 @@ variables:
 
 .vitem &$spf_smtp_comment$&
 .vindex &$spf_smtp_comment$&
 
 .vitem &$spf_smtp_comment$&
 .vindex &$spf_smtp_comment$&

+.vindex &%spf_smtp_comment_template%&

   This contains a string that can be used in a SMTP response
   to the calling party. Useful for "fail".
   This contains a string that can be used in a SMTP response
   to the calling party. Useful for "fail".

+.new
+  The string is generated by the SPF library from the template configured in the main config
+  option &%spf_smtp_comment_template%&.
+.wen

 .endlist
 
 
 .endlist
 
 


@@ -41390,8 +41466,8 @@ A possible solution is:
   # Or do some kind of IP lookup in a flat file or database
   # LIMIT = ${lookup{$sender_host_address}iplsearch{/etc/exim/proxy_limits}}
 
   # Or do some kind of IP lookup in a flat file or database
   # LIMIT = ${lookup{$sender_host_address}iplsearch{/etc/exim/proxy_limits}}
 

-  defer   message        = Too many connections from this IP right now
-          ratelimit      = LIMIT / 5s / per_conn / strict
+  defer   ratelimit      = LIMIT / 5s / per_conn / strict
+          message        = Too many connections from this IP right now

 .endd
 
 
 .endd