Docs: typoes

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

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 8d61543cdff8be0b6ff22e397af0aab0bac1b730..4728d9e78d8943a420766c57eaf2f805578d3cf2 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -2069,19 +2069,26 @@ withdrawn.
 
 
 
 
 
 

-.section "Dynamically loaded lookup module support" "SECTdynamicmodules"
+.section "Dynamically loaded module support" "SECTdynamicmodules"

 .cindex "lookup modules"
 .cindex "lookup modules"

+.cindex "router modules"
+.cindex "transport modules"
+.cindex "authenticator modules"

 .cindex "dynamic modules"
 .cindex ".so building"
 On some platforms, Exim supports not compiling all lookup types directly into
 the main binary, instead putting some into external modules which can be loaded
 on demand.
 This permits packagers to build Exim with support for lookups with extensive
 .cindex "dynamic modules"
 .cindex ".so building"
 On some platforms, Exim supports not compiling all lookup types directly into
 the main binary, instead putting some into external modules which can be loaded
 on demand.
 This permits packagers to build Exim with support for lookups with extensive

-library dependencies without requiring all users to install all of those
+library dependencies without requiring all systems to install all of those

 dependencies.
 dependencies.

-Most, but not all, lookup types can be built this way.
+.new
+Any combination of lookup types can be built this way.
+All of the lookup modules found as an Exim process starts will be loaded.
+.wen

 
 

-Set &`LOOKUP_MODULE_DIR`& to the directory into which the modules will be
+For building
+set &`LOOKUP_MODULE_DIR`& to the directory into which the modules will be

 installed; Exim will only load modules from that directory, as a security
 measure.  You will need to set &`CFLAGS_DYNAMIC`& if not already defined
 for your OS; see &_OS/Makefile-Linux_& for an example.
 installed; Exim will only load modules from that directory, as a security
 measure.  You will need to set &`CFLAGS_DYNAMIC`& if not already defined
 for your OS; see &_OS/Makefile-Linux_& for an example.


@@ -2091,12 +2098,25 @@ see &_src/EDITME_& for details.
 Then, for each module to be loaded dynamically, define the relevant
 &`LOOKUP_`&<&'lookup_type'&> flags to have the value "2" instead of "yes".
 For example, this will build in lsearch but load sqlite and mysql support
 Then, for each module to be loaded dynamically, define the relevant
 &`LOOKUP_`&<&'lookup_type'&> flags to have the value "2" instead of "yes".
 For example, this will build in lsearch but load sqlite and mysql support

-on demand:
+only if each is installed:

 .code
 LOOKUP_LSEARCH=yes
 LOOKUP_SQLITE=2
 LOOKUP_MYSQL=2
 .endd
 .code
 LOOKUP_LSEARCH=yes
 LOOKUP_SQLITE=2
 LOOKUP_MYSQL=2
 .endd

+Set also &`LOOKUP_`&<&'lookup_type'&>&` INCLUDE`& and
+&`LOOKUP_`&<&'lookup_type'&>`_LIBS if needed for each lookup type,
+ensuring that duplicates are not present in more global values.
+
+.new
+Similarly, authenticator, router and transport drivers can be built
+as external modules.
+Modules will be searched for as demanded by the runtime configuration,
+permitting a smaller Exim binary.
+
+For building, as above but using
+&`AUTH_*`&, &`ROUTER_*`& and &`TRANSPORT_*`& instead of &`LOOKUP_*`&,
+.wen

 
 
 .section "The building process" "SECID29"
 
 
 .section "The building process" "SECID29"


@@ -8198,7 +8218,7 @@ ${lookup mysql{servers=master; UPDATE ...} }
 The new version avoids issues with tainted
 arguments explicitly expanded as part of the query.
 The entire string within the braces becomes tainted,
 The new version avoids issues with tainted
 arguments explicitly expanded as part of the query.
 The entire string within the braces becomes tainted,

-including the server sepcification - which is not permissible.
+including the server specification - which is not permissible.

 If the older sytax is used, a warning message will be logged.
 This syntax will be removed in a future release.
 
 If the older sytax is used, a warning message will be logged.
 This syntax will be removed in a future release.
 


@@ -12611,6 +12631,11 @@ 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 &$connection_id$&
+.vindex "&$connection_id$&"
+.cindex connection "identifier logging"
+An identifier for the accepted connection, for use in custom logging.
+

 .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>>&.


@@ -15204,8 +15229,11 @@ See section &<<SECDKIMVFY>>& for further details.
 
 .option acl_smtp_etrn main string&!! unset
 .cindex "ETRN" "ACL for"
 
 .option acl_smtp_etrn main string&!! unset
 .cindex "ETRN" "ACL for"

+.cindex "ETRN" advertisement

 This option defines the ACL that is run when an SMTP ETRN command is
 This option defines the ACL that is run when an SMTP ETRN command is

-received. See chapter &<<CHAPACL>>& for further details.
+received.
+If no value is set then the ETRN facility is not advertised.
+See chapter &<<CHAPACL>>& for further details.

 
 .option acl_smtp_expn main string&!! unset
 .cindex "EXPN" "ACL for"
 
 .option acl_smtp_expn main string&!! unset
 .cindex "EXPN" "ACL for"


@@ -15778,9 +15806,9 @@ the ACL once for each signature in the message.
 See section &<<SECDKIMVFY>>&.
 
 
 See section &<<SECDKIMVFY>>&.
 
 

-.option dmarc_forensic_sender main string&!! unset &&&
-        dmarc_history_file main string unset &&&
-        dmarc_tld_file main string unset
+.options dmarc_forensic_sender main string&!! unset &&&
+         dmarc_history_file main string unset &&&
+         dmarc_tld_file main string unset

 .cindex DMARC "main section options"
 These options control DMARC processing.
 See section &<<SECDMARC>>& for details.
 .cindex DMARC "main section options"
 These options control DMARC processing.
 See section &<<SECDMARC>>& for details.


@@ -16106,9 +16134,11 @@ routing, but which are not used for listening by the daemon. See section
 
 . Allow this long option name to split; give it unsplit as a fifth argument
 . for the automatic .oindex that is generated by .option.
 
 . Allow this long option name to split; give it unsplit as a fifth argument
 . for the automatic .oindex that is generated by .option.

+. WAS:
+. .option "extract_addresses_remove_ &~&~arguments"
+. but apparently this results in searchability problems; bug 1197

 
 

-.option "extract_addresses_remove_arguments" main boolean true &&&
-         extract_addresses_remove_arguments
+.option extract_addresses_remove_arguments main boolean true

 .oindex "&%-t%&"
 .cindex "command line" "addresses with &%-t%&"
 .cindex "Sendmail compatibility" "&%-t%& option"
 .oindex "&%-t%&"
 .cindex "command line" "addresses with &%-t%&"
 .cindex "Sendmail compatibility" "&%-t%& option"


@@ -16248,7 +16278,7 @@ set.
 .cindex "underscore in EHLO/HELO"
 This option can be set to a string of rogue characters that are permitted in
 non-ip-literal EHLO and HELO names in addition to the standard letters, digits,
 .cindex "underscore in EHLO/HELO"
 This option can be set to a string of rogue characters that are permitted in
 non-ip-literal EHLO and HELO names in addition to the standard letters, digits,

-hyphens, and dots. For examplem if you really must allow underscores,
+hyphens, and dots. For example if you really must allow underscores,

 you can set
 .code
 helo_allow_chars = _
 you can set
 .code
 helo_allow_chars = _


@@ -16622,7 +16652,7 @@ has been built with LDAP support.
 .cindex "ESMTP extensions" LIMITS
 This option can be used to suppress the advertisement of the SMTP
 LIMITS extension (RFC 9422) to specific hosts.
 .cindex "ESMTP extensions" LIMITS
 This option can be used to suppress the advertisement of the SMTP
 LIMITS extension (RFC 9422) to specific hosts.

-If permitted, Exim as a servier will advertise in the EHLO response
+If permitted, Exim as a server will advertise in the EHLO response

 the limit for RCPT commands set by the &%recipients_max%& option (if it is set)
 and the limit for MAIL commands set by the &%smtp_accept_max_per_connection%&
 option.
 the limit for RCPT commands set by the &%recipients_max%& option (if it is set)
 and the limit for MAIL commands set by the &%smtp_accept_max_per_connection%&
 option.


@@ -17186,7 +17216,7 @@ See also the &%hosts_pipe_connect%& smtp transport option.
 
 The SMTP service extension keyword advertised is &"PIPECONNECT"&;
 it permits the client to pipeline
 
 The SMTP service extension keyword advertised is &"PIPECONNECT"&;
 it permits the client to pipeline

-TCP connection and hello command (inclear phase),
+TCP connection and hello command (cleatext phase),

 or TLS-establishment and hello command (encrypted phase),
 on later connections to the same host.
 
 or TLS-establishment and hello command (encrypted phase),
 on later connections to the same host.
 


@@ -17754,8 +17784,7 @@ live with.
 . searchable.  NM changed this occurrence for bug 1197 to no longer allow
 . the option name to split.
 
 . searchable.  NM changed this occurrence for bug 1197 to no longer allow
 . the option name to split.
 

-.option "smtp_accept_max_per_connection" main integer&!! 1000 &&&
-         smtp_accept_max_per_connection
+.option smtp_accept_max_per_connection main integer&!! 1000

 .cindex "SMTP" "limiting incoming message count"
 .cindex "limit" "messages per SMTP connection"
 The value of this option limits the number of MAIL commands that Exim is
 .cindex "SMTP" "limiting incoming message count"
 .cindex "limit" "messages per SMTP connection"
 The value of this option limits the number of MAIL commands that Exim is


@@ -17809,8 +17838,7 @@ various &%-od%&&'x'& command line options.
 
 . See the comment on smtp_accept_max_per_connection
 
 
 . See the comment on smtp_accept_max_per_connection
 

-.option "smtp_accept_queue_per_connection" main integer 10 &&&
-         smtp_accept_queue_per_connection
+.option smtp_accept_queue_per_connection main integer 10

 .cindex "queueing incoming messages"
 .cindex "message" "queueing by message count"
 This option limits the number of delivery processes that Exim starts
 .cindex "queueing incoming messages"
 .cindex "message" "queueing by message count"
 This option limits the number of delivery processes that Exim starts


@@ -22220,6 +22248,12 @@ subject to address rewriting. Otherwise, they are treated like new addresses
 and are rewritten according to the global rewriting rules.
 
 
 and are rewritten according to the global rewriting rules.
 
 

+.option sieve_inbox redirect string&!! inbox
+.new
+The value of this option is passed to a Sieve filter to specify the
+name of the mailbox used for "keep" operations (explicit or implicit).
+.wen
+

 .option sieve_subaddress redirect string&!! unset
 The value of this option is passed to a Sieve filter to specify the
 :subaddress part of an address.
 .option sieve_subaddress redirect string&!! unset
 The value of this option is passed to a Sieve filter to specify the
 :subaddress part of an address.


@@ -23256,7 +23290,11 @@ fileinto "folder23";
 .endd
 In this situation, the expansion of &%file%& or &%directory%& in the transport
 must transform the relative path into an appropriate absolute filename. In the
 .endd
 In this situation, the expansion of &%file%& or &%directory%& in the transport
 must transform the relative path into an appropriate absolute filename. In the

-case of Sieve filters, the name &'inbox'& must be handled. It is the name that
+case of Sieve filters, the name &'inbox'& must be handled. It is the
+.new
+default
+.wen
+name that

 is used as a result of a &"keep"& action in the filter. This example shows one
 way of handling this requirement:
 .code
 is used as a result of a &"keep"& action in the filter. This example shows one
 way of handling this requirement:
 .code


@@ -23272,6 +23310,12 @@ With this setting of &%file%&, &'inbox'& refers to the standard mailbox
 location, absolute paths are used without change, and other folders are in the
 &_mail_& directory within the home directory.
 
 location, absolute paths are used without change, and other folders are in the
 &_mail_& directory within the home directory.
 

+.new
+An alternative for the &"keep"& aspect is to use the &%sieve_inbox%& option
+on the redirect router that calls the Sieve filter,
+to explicitly set the filename used.
+.wen
+

 &*Note 1*&: While processing an Exim filter, a relative path such as
 &_folder23_& is turned into an absolute path if a home directory is known to
 the router. In particular, this is the case if &%check_local_user%& is set. If
 &*Note 1*&: While processing an Exim filter, a relative path such as
 &_folder23_& is turned into an absolute path if a home directory is known to
 the router. In particular, this is the case if &%check_local_user%& is set. If


@@ -23282,6 +23326,10 @@ path to the transport.
 &*Note 2*&: An absolute path in &$address_file$& is not treated specially;
 the &%file%& or &%directory%& option is still used if it is set.
 
 &*Note 2*&: An absolute path in &$address_file$& is not treated specially;
 the &%file%& or &%directory%& option is still used if it is set.
 

+.new
+&*Note 3*&: Permitting a user to enable writes to an absolute path
+may be a security issue.
+.wen

 
 
 
 
 
 


@@ -35926,7 +35974,7 @@ The third argument may be NULL, in which case the &%-oMas%& option is omitted.
 
 
 .vitem &*void&~debug_printf(char&~*,&~...)*&
 
 
 .vitem &*void&~debug_printf(char&~*,&~...)*&

-This is Exim's debugging function, with arguments as for &'(printf()'&. The
+This is Exim's debugging function, with arguments as for &'printf()'&. The

 output is written to the standard error stream. If no debugging is selected,
 calls to &'debug_printf()'& have no effect. Normally, you should make calls
 conditional on the &`local_scan`& debug selector by coding like this:
 output is written to the standard error stream. If no debugging is selected,
 calls to &'debug_printf()'& have no effect. Normally, you should make calls
 conditional on the &`local_scan`& debug selector by coding like this:


@@ -37317,12 +37365,8 @@ See the next section for more detail about error handling.
 .cindex "SMTP" "batching over TCP/IP"
 When a message is successfully delivered over a TCP/IP SMTP connection, Exim
 looks in the hints database for the transport to see if there are any queued
 .cindex "SMTP" "batching over TCP/IP"
 When a message is successfully delivered over a TCP/IP SMTP connection, Exim
 looks in the hints database for the transport to see if there are any queued

-messages waiting for the host to which it is connected. If it finds one, it
-creates a new Exim process using the &%-MC%& option (which can only be used by
-a process running as root or the Exim user) and passes the TCP/IP socket to it
-so that it can deliver another message using the same socket. The new process
-does only those deliveries that are routed to the connected host, and may in
-turn pass the socket on to a third process, and so on.
+messages waiting for the host to which it is connected.
+If it finds one, it arranges to attempt that message on the same connection.

 
 The &%connection_max_messages%& option of the &(smtp)& transport can be used to
 limit the number of messages sent down a single TCP/IP connection.
 
 The &%connection_max_messages%& option of the &(smtp)& transport can be used to
 limit the number of messages sent down a single TCP/IP connection.


@@ -37660,6 +37704,14 @@ RCPT failures.
 .subsection "The ETRN command" SECTETRN
 .cindex "ETRN" "processing"
 .cindex "ESMTP extensions" ETRN
 .subsection "The ETRN command" SECTETRN
 .cindex "ETRN" "processing"
 .cindex "ESMTP extensions" ETRN

+Most modern installations never need to use this.
+It is used for managing messages queued for an intermittently-connecting
+destination (eg. one using a dialup connection).
+
+.oindex "&%acl_smtp_etrn%&"
+The command is only available if permitted by an ACL
+specfied by the main-section &%acl_smtp_etrn%& option.
+

 RFC 1985 describes an ESMTP command called ETRN that is designed to
 overcome the security problems of the TURN command (which has fallen into
 disuse). When Exim receives an ETRN command on a TCP/IP connection, it runs
 RFC 1985 describes an ESMTP command called ETRN that is designed to
 overcome the security problems of the TURN command (which has fallen into
 disuse). When Exim receives an ETRN command on a TCP/IP connection, it runs


@@ -39340,17 +39392,19 @@ because the arguments are checked before the configuration file is read. The
 only way to log such cases is to interpose a script such as &_util/logargs.sh_&
 between the caller and Exim.
 .next
 only way to log such cases is to interpose a script such as &_util/logargs.sh_&
 between the caller and Exim.
 .next

-.cindex "log" "connection identifier"
-&%connection_identifier%&: An identifier for the accepted connection is added to
+.cindex log "connection identifier"
+.cindex connection "identifier logging"
+&%connection_id%&: An identifier for the accepted connection is added to

 connection start and end lines and to message accept lines.
 The identifier is tagged by Ci=.
 The value is PID-based, so will reset on reboot and will wrap.
 .next
 connection start and end lines and to message accept lines.
 The identifier is tagged by Ci=.
 The value is PID-based, so will reset on reboot and will wrap.
 .next

-.cindex "log" "connection rejections"
+.cindex log "connection rejections"
+.cindex connection "rejection logging"

 &%connection_reject%&: A log entry is written whenever an incoming SMTP
 connection is rejected, for whatever reason.
 .next
 &%connection_reject%&: A log entry is written whenever an incoming SMTP
 connection is rejected, for whatever reason.
 .next

-.cindex "log" "delayed delivery"
+.cindex log "delayed delivery"

 .cindex "delayed delivery, logging"
 &%delay_delivery%&: A log entry is written whenever a delivery process is not
 started for an incoming message because the load is too high or too many
 .cindex "delayed delivery, logging"
 &%delay_delivery%&: A log entry is written whenever a delivery process is not
 started for an incoming message because the load is too high or too many


@@ -40272,8 +40326,6 @@ for remote hosts
 The &'misc'& database is used for
 
 .ilist
 The &'misc'& database is used for
 
 .ilist

-Serializing ETRN runs (when &%smtp_etrn_serialize%& is set)
-.next

 Serializing delivery to a specific host (when &%serialize_hosts%& is set in an
 &(smtp)& transport)
 .next
 Serializing delivery to a specific host (when &%serialize_hosts%& is set in an
 &(smtp)& transport)
 .next


@@ -40281,11 +40333,13 @@ Limiting the concurrency of specific transports (when &%max_parallel%& is set
 in a transport)
 .next
 Recording EHLO-time facilities advertised by hosts
 in a transport)
 .next
 Recording EHLO-time facilities advertised by hosts

+.next
+Serializing ETRN runs (when &%smtp_etrn_serialize%& is set)

 .endlist
 
 
 
 .endlist
 
 
 

-.section "exim_dumpdb" "SECTdumpdb"
+.subsection "exim_dumpdb" "SECTdumpdb"

 .cindex "&'exim_dumpdb'&"
 The entire contents of a database are written to the standard output by the
 &'exim_dumpdb'& program,
 .cindex "&'exim_dumpdb'&"
 The entire contents of a database are written to the standard output by the
 &'exim_dumpdb'& program,


@@ -40327,7 +40381,7 @@ cross-references.
 
 
 
 
 
 

-.section "exim_tidydb" "SECTtidydb"
+.subsection "exim_tidydb" "SECTtidydb"

 .cindex "&'exim_tidydb'&"
 The &'exim_tidydb'& utility program is used to tidy up the contents of a hints
 database. If run with no options, it removes all records that are more than 30
 .cindex "&'exim_tidydb'&"
 The &'exim_tidydb'& utility program is used to tidy up the contents of a hints
 database. If run with no options, it removes all records that are more than 30


@@ -40376,7 +40430,7 @@ databases is likely to keep on increasing.
 
 
 
 
 
 

-.section "exim_fixdb" "SECTfixdb"
+.subsection "exim_fixdb" "SECTfixdb"

 .cindex "&'exim_fixdb'&"
 The &'exim_fixdb'& program is a utility for interactively modifying databases.
 Its main use is for testing Exim, but it might also be occasionally useful for
 .cindex "&'exim_fixdb'&"
 The &'exim_fixdb'& program is a utility for interactively modifying databases.
 Its main use is for testing Exim, but it might also be occasionally useful for


@@ -43116,6 +43170,7 @@ Events have names which correspond to the point in process at which they fire.
 The name is placed in the variable &$event_name$& and the event action
 expansion must check this, as it will be called for every possible event type.
 
 The name is placed in the variable &$event_name$& and the event action
 expansion must check this, as it will be called for every possible event type.
 

+.new

 The current list of events is:
 .itable all 0 0 4 25* left 10* center 15* center 50* left
 .row auth:fail             after    both       "per driver per authentication attempt"
 The current list of events is:
 .itable all 0 0 4 25* left 10* center 15* center 50* left
 .row auth:fail             after    both       "per driver per authentication attempt"


@@ -43135,7 +43190,10 @@ The current list of events is:
 .row tls:fail:connect       after    main       "per connection"
 .row smtp:connect           after    transport  "per connection"
 .row smtp:ehlo              after    transport  "per connection"
 .row tls:fail:connect       after    main       "per connection"
 .row smtp:connect           after    transport  "per connection"
 .row smtp:ehlo              after    transport  "per connection"

+.row smtp:fail:protocol     after    main       "per connection"
+.row smtp:fail:syntax       after    main       "per connection"

 .endtable
 .endtable

+.wen

 New event types may be added in future.
 
 The event name is a colon-separated list, defining the type of
 New event types may be added in future.
 
 The event name is a colon-separated list, defining the type of


@@ -43151,6 +43209,7 @@ should define the event action.
 
 An additional variable, &$event_data$&, is filled with information varying
 with the event type:
 
 An additional variable, &$event_data$&, is filled with information varying
 with the event type:

+.new

 .itable all 0 0 2 20* left 80* left
 .row auth:fail           "smtp response"
 .row dane:fail            "failure reason"
 .itable all 0 0 2 20* left 80* left
 .row auth:fail           "smtp response"
 .row dane:fail            "failure reason"


@@ -43166,7 +43225,10 @@ with the event type:
 .row tls:fail:connect     "error string"
 .row smtp:connect         "smtp banner"
 .row smtp:ehlo            "smtp ehlo response"
 .row tls:fail:connect     "error string"
 .row smtp:connect         "smtp banner"
 .row smtp:ehlo            "smtp ehlo response"

+.row smtp:fail:protocol   "error string"
+.row smtp:fail:syntax     "error string"

 .endtable
 .endtable

+.wen

 
 The :defer events populate one extra variable: &$event_defer_errno$&.
 
 
 The :defer events populate one extra variable: &$event_defer_errno$&.