X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/422b73eb26436898a5a6bd71363931077c42e73b..c06ddd664f4a0f6e485f6f9f6b5086aa4719a441:/doc/doc-docbook/spec.xfpt diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index fbcad3d6f..2a3fb6c51 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -1399,16 +1399,21 @@ If the &%domains%& option is set, the domain of the address must be in the set of domains that it defines. .next .vindex "&$local_part_prefix$&" +.vindex "&$local_part_prefix_v$&" .vindex "&$local_part$&" .vindex "&$local_part_suffix$&" +.vindex "&$local_part_suffix_v$&" .cindex affix "router precondition" If the &%local_parts%& option is set, the local part of the address must be in the set of local parts that it defines. If &%local_part_prefix%& or &%local_part_suffix%& is in use, the prefix or suffix is removed from the local part before this check. If you want to do precondition tests on local parts that include affixes, you can do so by using a &%condition%& option (see below) -that uses the variables &$local_part$&, &$local_part_prefix$&, and -&$local_part_suffix$& as necessary. +.new +that uses the variables &$local_part$&, &$local_part_prefix$&, +&$local_part_prefix_v$&, &$local_part_suffix$& +and &$local_part_suffix_v$& as necessary. +.wen .next .vindex "&$local_user_uid$&" .vindex "&$local_user_gid$&" @@ -3866,6 +3871,14 @@ 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. +.new +.vitem &%-MCd%& +.oindex "&%-MCd%&" +This option is not intended for use by external callers. It is used internally +by Exim in conjunction with the &%-d%& option +to pass on an information string on the purpose of the process. +.wen + .vitem &%-MCG%&&~<&'queue&~name'&> .oindex "&%-MCG%&" This option is not intended for use by external callers. It is used internally @@ -6757,7 +6770,12 @@ by default, but has an option to omit them (see section &<>&). whose name is the key by calling the &[lstat()]& function. The key may not contain any forward slash characters. If &[lstat()]& succeeds, the result of the lookup is the name of the entry, which may be a file, directory, -symbolic link, or any other kind of directory entry. An example of how this +symbolic link, or any other kind of directory entry. +.new +.cindex "tainted data" "dsearch result" +It is regarded as untainted. +.wen +An example of how this lookup can be used to support virtual domains is given in section &<>&. .next @@ -12447,12 +12465,19 @@ the retrieved data. .wen .vindex "&$local_part_prefix$&" +.vindex "&$local_part_prefix_v$&" .vindex "&$local_part_suffix$&" +.vindex "&$local_part_suffix_v$&" .cindex affix variables If a local part prefix or suffix has been recognized, it is not included in the value of &$local_part$& during routing and subsequent delivery. The values of any prefix or suffix are in &$local_part_prefix$& and &$local_part_suffix$&, respectively. +.new +If the affix specification included a wildcard then the portion of +the affix matched by the wildcard is in +&$local_part_prefix_v$& or &$local_part_suffix_v$& as appropriate. +.wen When a message is being delivered to a file, pipe, or autoreply transport as a result of aliasing or forwarding, &$local_part$& is set to the local part of @@ -12506,12 +12531,26 @@ When an address is being routed or delivered, and a specific prefix for the local part was recognized, it is available in this variable, having been removed from &$local_part$&. +.new +.vitem &$local_part_prefix_v$& +.vindex "&$local_part_prefix_v$&" +When &$local_part_prefix$& is valid and the prefix match used a wildcard, +the portion matching the wildcard is available in this variable. +.wen + .vitem &$local_part_suffix$& .vindex "&$local_part_suffix$&" When an address is being routed or delivered, and a specific suffix for the local part was recognized, it is available in this variable, having been removed from &$local_part$&. +.new +.vitem &$local_part_suffix_v$& +.vindex "&$local_part_suffix_v$&" +When &$local_part_suffix$& is valid and the suffix match used a wildcard, +the portion matching the wildcard is available in this variable. +.wen + .new .vitem &$local_part_verified$& .vindex "&$local_part_verified$&" @@ -12854,6 +12893,13 @@ or if not set, the value of &$qualify_domain$&. .cindex queues named The name of the spool queue in use; empty for the default queue. +.vitem &$queue_size$& +.vindex "&$queue_size$&" +.cindex "queue" "size of" +.cindex "spool" "number of messages" +This variable contains the number of messages queued. +It is evaluated on demand, but no more often than once every minute. + .vitem &$r_...$& .vindex &$r_...$& .cindex router variables @@ -14276,6 +14322,7 @@ listed in more than one group. .row &%daemon_startup_sleep%& "time to sleep between tries" .row &%extra_local_interfaces%& "not necessarily listened on" .row &%local_interfaces%& "on which to listen, with optional ports" +.row &%notifier_socket%& "override compiled-in value" .row &%pid_file_path%& "override compiled-in value" .row &%queue_run_max%& "maximum simultaneous queue runners" .endtable @@ -16349,6 +16396,24 @@ harm. This option overrides the &%pipe_as_creator%& option of the &(pipe)& transport driver. +.new +.option notifier_socket main string "$spool_directory/exim_daemon_notify" +This option gives the name for a unix-domain socket on which the daemon +listens for work and information-requests. +Only installations running multiple daemons sharing a spool directory +should need to modify the default. + +The option is expanded before use. +If the platform supports Linux-style abstract socket names, the result +is used with a nul byte prefixed. +Otherwise, it should be a full path name and use a directory accessible +to Exim. + +If the Exim command line uses a &%-oX%& option and does not use &%-oP%& +then a notifier socket is not created. +.wen + + .option openssl_options main "string list" "+no_sslv2 +no_sslv3 +single_dh_use +no_ticket +no_renegotiation" .cindex "OpenSSL "compatibility options" This option allows an administrator to adjust the SSL options applied @@ -18778,6 +18843,12 @@ command for LMTP, SMTP, and BSMTP deliveries has the prefix removed by default. This behaviour can be overridden by setting &%rcpt_include_affixes%& true on the relevant transport. +.new +.vindex &$local_part_prefix_v$& +If wildcarding (above) was used then the part of the prefix matching the +wildcard is available in &$local_part_prefix_v$&. +.wen + When an address is being verified, &%local_part_prefix%& affects only the behaviour of the router. If the callout feature of verification is in use, this means that the full address, including the prefix, will be used during the @@ -20116,8 +20187,10 @@ semicolon is the default route list separator. .section "Format of one host item" "SECTformatonehostitem" -Each item in the list of hosts is either a host name or an IP address, -optionally with an attached port number. When no port is given, an IP address +Each item in the list of hosts can be either a host name or an IP address, +optionally with an attached port number, or it can be a single "+" +(see &%hosts_randomize%&). +When no port is given, an IP address is not enclosed in brackets. When a port is specified, it overrides the port specification on the transport. The port is separated from the name or address by a colon. This leads to some complications: @@ -33665,13 +33738,22 @@ The following list describes all expansion variables that are available in the MIME ACL: .vlist +.vitem &$mime_anomaly_level$& &&& + &$mime_anomaly_text$& +.vindex &$mime_anomaly_level$& +.vindex &$mime_anomaly_text$& +If there are problems decoding, these variables contain information on +the detected issue. + .vitem &$mime_boundary$& -If the current part is a multipart (see &$mime_is_multipart$&) below, it should +.vindex &$mime_boundary$& +If the current part is a multipart (see &$mime_is_multipart$& below), it should have a boundary string, which is stored in this variable. If the current part has no boundary parameter in the &'Content-Type:'& header, this variable contains the empty string. .vitem &$mime_charset$& +.vindex &$mime_charset$& This variable contains the character set identifier, if one was found in the &'Content-Type:'& header. Examples for charset identifiers are: .code @@ -33683,31 +33765,37 @@ Please note that this value is not normalized, so you should do matches case-insensitively. .vitem &$mime_content_description$& +.vindex &$mime_content_description$& This variable contains the normalized content of the &'Content-Description:'& header. It can contain a human-readable description of the parts content. Some implementations repeat the filename for attachments here, but they are usually only used for display purposes. .vitem &$mime_content_disposition$& +.vindex &$mime_content_disposition$& This variable contains the normalized content of the &'Content-Disposition:'& header. You can expect strings like &"attachment"& or &"inline"& here. .vitem &$mime_content_id$& +.vindex &$mime_content_id$& This variable contains the normalized content of the &'Content-ID:'& header. This is a unique ID that can be used to reference a part from another part. .vitem &$mime_content_size$& +.vindex &$mime_content_size$& This variable is set only after the &%decode%& modifier (see above) has been successfully run. It contains the size of the decoded part in kilobytes. The size is always rounded up to full kilobytes, so only a completely empty part has a &$mime_content_size$& of zero. .vitem &$mime_content_transfer_encoding$& +.vindex &$mime_content_transfer_encoding$& This variable contains the normalized content of the &'Content-transfer-encoding:'& header. This is a symbolic name for an encoding type. Typical values are &"base64"& and &"quoted-printable"&. .vitem &$mime_content_type$& +.vindex &$mime_content_type$& If the MIME part has a &'Content-Type:'& header, this variable contains its value, lowercased, and without any options (like &"name"& or &"charset"&). Here are some examples of popular MIME types, as they may appear in this variable: @@ -33722,6 +33810,7 @@ If the MIME part has no &'Content-Type:'& header, this variable contains the empty string. .vitem &$mime_decoded_filename$& +.vindex &$mime_decoded_filename$& This variable is set only after the &%decode%& modifier (see above) has been successfully run. It contains the full path and filename of the file containing the decoded data. @@ -33730,6 +33819,7 @@ containing the decoded data. .cindex "RFC 2047" .vlist .vitem &$mime_filename$& +.vindex &$mime_filename$& This is perhaps the most important of the MIME variables. It contains a proposed filename for an attachment, if one was found in either the &'Content-Type:'& or &'Content-Disposition:'& headers. The filename will be @@ -33740,6 +33830,7 @@ decoded, but no additional sanity checks are done. found, this variable contains the empty string. .vitem &$mime_is_coverletter$& +.vindex &$mime_is_coverletter$& This variable attempts to differentiate the &"cover letter"& of an e-mail from attached data. It can be used to clamp down on flashy or unnecessarily encoded content in the cover letter, while not restricting attachments at all. @@ -33772,18 +33863,22 @@ deny message = HTML mail is not accepted here condition = $mime_is_coverletter condition = ${if eq{$mime_content_type}{text/html}{1}{0}} .endd + .vitem &$mime_is_multipart$& +.vindex &$mime_is_multipart$& This variable has the value 1 (true) when the current part has the main type &"multipart"&, for example, &"multipart/alternative"& or &"multipart/mixed"&. Since multipart entities only serve as containers for other parts, you may not want to carry out specific actions on them. .vitem &$mime_is_rfc822$& +.vindex &$mime_is_rfc822$& This variable has the value 1 (true) if the current part is not a part of the checked message itself, but part of an attached message. Attached message decoding is fully recursive. .vitem &$mime_part_count$& +.vindex &$mime_part_count$& This variable is a counter that is raised for each processed MIME part. It starts at zero for the very first part (which is usually a multipart). The counter is per-message, so it is reset when processing RFC822 attachments (see @@ -36689,12 +36784,18 @@ to a router of this form: virtual: driver = redirect domains = dsearch;/etc/mail/virtual - data = ${lookup{$local_part}lsearch{/etc/mail/virtual/$domain}} + data = ${lookup{$local_part}lsearch{/etc/mail/virtual/$domain_data}} no_more .endd +.new The &%domains%& option specifies that the router is to be skipped, unless there is a file in the &_/etc/mail/virtual_& directory whose name is the same as the -domain that is being processed. When the router runs, it looks up the local +domain that is being processed. +The &(dsearch)& lookup used results in an untainted version of &$domain$& +being placed into the &$domain_data$& variable. +.wen + +When the router runs, it looks up the local part in the file to find a new address (or list of addresses). The &%no_more%& setting ensures that if the lookup fails (leading to &%data%& being an empty string), Exim gives up on the address without trying any subsequent routers. @@ -40175,6 +40276,8 @@ To generate keys under OpenSSL: openssl genrsa -out dkim_rsa.private 2048 openssl rsa -in dkim_rsa.private -out /dev/stdout -pubout -outform PEM .endd +The result file from the first command should be retained, and +this option set to use it. Take the base-64 lines from the output of the second command, concatenated, for the DNS TXT record. See section 3.6 of RFC6376 for the record specification.