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diff --git a/man/man8/local.8 b/man/man8/local.8 new file mode 100644 index 0000000..91fceb7 --- /dev/null +++ b/man/man8/local.8 @@ -0,0 +1,658 @@ +.TH LOCAL 8 +.ad +.fi +.SH NAME +local +\- +Postfix local mail delivery +.SH "SYNOPSIS" +.na +.nf +\fBlocal\fR [generic Postfix daemon options] +.SH DESCRIPTION +.ad +.fi +The \fBlocal\fR(8) daemon processes delivery requests from the +Postfix queue manager to deliver mail to local recipients. +Each delivery request specifies a queue file, a sender address, +a domain or host to deliver to, and one or more recipients. +This program expects to be run from the \fBmaster\fR(8) process +manager. + +The \fBlocal\fR(8) daemon updates queue files and marks recipients +as finished, or it informs the queue manager that delivery should +be tried again at a later time. Delivery status reports are sent +to the \fBbounce\fR(8), \fBdefer\fR(8) or \fBtrace\fR(8) daemon as +appropriate. +.SH "CASE FOLDING" +.na +.nf +.ad +.fi +All delivery decisions are made using the bare recipient +name (i.e. the address localpart), folded to lower case. +See also under ADDRESS EXTENSION below for a few exceptions. +.SH "SYSTEM-WIDE AND USER-LEVEL ALIASING" +.na +.nf +.ad +.fi +The system administrator can set up one or more system\-wide +\fBsendmail\fR\-style alias databases. +Users can have \fBsendmail\fR\-style ~/.\fBforward\fR files. +Mail for \fIname\fR is delivered to the alias \fIname\fR, to +destinations in ~\fIname\fR/.\fBforward\fR, to the mailbox owned +by the user \fIname\fR, or it is sent back as undeliverable. + +The system administrator can specify a comma/space separated list +of ~\fR/.\fBforward\fR like files through the \fBforward_path\fR +configuration parameter. Upon delivery, the local delivery agent +tries each pathname in the list until a file is found. + +Delivery via ~/.\fBforward\fR files is done with the privileges +of the recipient. +Thus, ~/.\fBforward\fR like files must be readable by the +recipient, and their parent directory needs to have "execute" +permission for the recipient. + +The \fBforward_path\fR parameter is subject to interpolation of +\fB$user\fR (recipient username), \fB$home\fR (recipient home +directory), \fB$shell\fR (recipient shell), \fB$recipient\fR +(complete recipient address), \fB$extension\fR (recipient address +extension), \fB$domain\fR (recipient domain), \fB$local\fR +(entire recipient address localpart) and +\fB$recipient_delimiter.\fR The forms \fI${name?value}\fR and +\fI${name:value}\fR expand conditionally to \fIvalue\fR when +\fI$name\fR is (is not) defined. +Characters that may have special meaning to the shell or file system +are replaced by underscores. The list of acceptable characters +is specified with the \fBforward_expansion_filter\fR configuration +parameter. + +An alias or ~/.\fBforward\fR file may list any combination of external +commands, destination file names, \fB:include:\fR directives, or +mail addresses. +See \fBaliases\fR(5) for a precise description. Each line in a +user's .\fBforward\fR file has the same syntax as the right\-hand part +of an alias. + +When an address is found in its own alias expansion, delivery is +made to the user instead. When a user is listed in the user's own +~/.\fBforward\fR file, delivery is made to the user's mailbox instead. +An empty ~/.\fBforward\fR file means do not forward mail. + +In order to prevent the mail system from using up unreasonable +amounts of memory, input records read from \fB:include:\fR or from +~/.\fBforward\fR files are broken up into chunks of length +\fBline_length_limit\fR. + +While expanding aliases, ~/.\fBforward\fR files, and so on, the +program attempts to avoid duplicate deliveries. The +\fBduplicate_filter_limit\fR configuration parameter limits the +number of remembered recipients. +.SH "MAIL FORWARDING" +.na +.nf +.ad +.fi +For the sake of reliability, forwarded mail is re\-submitted as +a new message, so that each recipient has a separate on\-file +delivery status record. + +In order to stop mail forwarding loops early, the software adds an +optional +\fBDelivered\-To:\fR header with the final envelope recipient address. If +mail arrives for a recipient that is already listed in a +\fBDelivered\-To:\fR header, the message is bounced. +.SH "MAILBOX DELIVERY" +.na +.nf +.ad +.fi +The default per\-user mailbox is a file in the UNIX mail spool +directory (\fB/var/mail/\fIuser\fR or \fB/var/spool/mail/\fIuser\fR); +the location can be specified with the \fBmail_spool_directory\fR +configuration parameter. Specify a name ending in \fB/\fR for +\fBqmail\fR\-compatible \fBmaildir\fR delivery. + +Alternatively, the per\-user mailbox can be a file in the user's home +directory with a name specified via the \fBhome_mailbox\fR +configuration parameter. Specify a relative path name. Specify a name +ending in \fB/\fR for \fBqmail\fR\-compatible \fBmaildir\fR delivery. + +Mailbox delivery can be delegated to an external command specified +with the \fBmailbox_command_maps\fR and \fBmailbox_command\fR +configuration parameters. The command +executes with the privileges of the recipient user (exceptions: +secondary groups are not enabled; in case of delivery as root, +the command executes with the privileges of \fBdefault_privs\fR). + +Mailbox delivery can be delegated to alternative message transports +specified in the \fBmaster.cf\fR file. +The \fBmailbox_transport_maps\fR and \fBmailbox_transport\fR +configuration parameters specify an optional +message transport that is to be used for all local recipients, +regardless of whether they are found in the UNIX passwd database. +The \fBfallback_transport_maps\fR and +\fBfallback_transport\fR parameters specify an optional +message transport +for recipients that are not found in the aliases(5) or UNIX +passwd database. + +In the case of UNIX\-style mailbox delivery, +the \fBlocal\fR(8) daemon prepends a "\fBFrom \fIsender time_stamp\fR" +envelope header to each message, prepends an +\fBX\-Original\-To:\fR header with the recipient address as given to +Postfix, prepends an +optional \fBDelivered\-To:\fR header +with the final envelope recipient address, prepends a \fBReturn\-Path:\fR +header with the envelope sender address, prepends a \fB>\fR character +to lines beginning with "\fBFrom \fR", and appends an empty line. +The mailbox is locked for exclusive access while delivery is in +progress. In case of problems, an attempt is made to truncate the +mailbox to its original length. + +In the case of \fBmaildir\fR delivery, the local daemon prepends +an optional +\fBDelivered\-To:\fR header with the final envelope recipient address, +prepends an +\fBX\-Original\-To:\fR header with the recipient address as given to +Postfix, +and prepends a \fBReturn\-Path:\fR header with the envelope sender +address. +.SH "EXTERNAL COMMAND DELIVERY" +.na +.nf +.ad +.fi +The \fBallow_mail_to_commands\fR configuration parameter restricts +delivery to external commands. The default setting (\fBalias, +forward\fR) forbids command destinations in \fB:include:\fR files. + +Optionally, the process working directory is changed to the path +specified with \fBcommand_execution_directory\fR (Postfix 2.2 and +later). Failure to change directory causes mail to be deferred. + +The \fBcommand_execution_directory\fR parameter value is subject +to interpolation of \fB$user\fR (recipient username), +\fB$home\fR (recipient home directory), \fB$shell\fR +(recipient shell), \fB$recipient\fR (complete recipient +address), \fB$extension\fR (recipient address extension), +\fB$domain\fR (recipient domain), \fB$local\fR (entire +recipient address localpart) and \fB$recipient_delimiter.\fR +The forms \fI${name?value}\fR and \fI${name:value}\fR expand +conditionally to \fIvalue\fR when \fI$name\fR is (is not) +defined. Characters that may have special meaning to the +shell or file system are replaced by underscores. The list +of acceptable characters is specified with the +\fBexecution_directory_expansion_filter\fR configuration +parameter. + +The command is executed directly where possible. Assistance by the +shell (\fB/bin/sh\fR on UNIX systems) is used only when the command +contains shell magic characters, or when the command invokes a shell +built\-in command. + +A limited amount of command output (standard output and standard +error) is captured for inclusion with non\-delivery status reports. +A command is forcibly terminated if it does not complete within +\fBcommand_time_limit\fR seconds. Command exit status codes are +expected to follow the conventions defined in <\fBsysexits.h\fR>. +Exit status 0 means normal successful completion. + +Postfix version 2.3 and later support RFC 3463\-style enhanced +status codes. If a command terminates with a non\-zero exit +status, and the command output begins with an enhanced +status code, this status code takes precedence over the +non\-zero exit status. + +A limited amount of message context is exported via environment +variables. Characters that may have special meaning to the shell +are replaced by underscores. The list of acceptable characters +is specified with the \fBcommand_expansion_filter\fR configuration +parameter. +.IP \fBSHELL\fR +The recipient user's login shell. +.IP \fBHOME\fR +The recipient user's home directory. +.IP \fBUSER\fR +The bare recipient name. +.IP \fBEXTENSION\fR +The optional recipient address extension. +.IP \fBDOMAIN\fR +The recipient address domain part. +.IP \fBLOGNAME\fR +The bare recipient name. +.IP \fBLOCAL\fR +The entire recipient address localpart (text to the left of the +rightmost @ character). +.IP \fBORIGINAL_RECIPIENT\fR +The entire recipient address, before any address rewriting +or aliasing (Postfix 2.5 and later). +.IP \fBRECIPIENT\fR +The entire recipient address. +.IP \fBSENDER\fR +The entire sender address. +.PP +Additional remote client information is made available via +the following environment variables: +.IP \fBCLIENT_ADDRESS\fR +Remote client network address. Available as of Postfix 2.2. +.IP \fBCLIENT_HELO\fR +Remote client EHLO command parameter. Available as of Postfix 2.2. +.IP \fBCLIENT_HOSTNAME\fR +Remote client hostname. Available as of Postfix 2.2. +.IP \fBCLIENT_PROTOCOL\fR +Remote client protocol. Available as of Postfix 2.2. +.IP \fBSASL_METHOD\fR +SASL authentication method specified in the +remote client AUTH command. Available as of Postfix 2.2. +.IP \fBSASL_SENDER\fR +SASL sender address specified in the remote client MAIL +FROM command. Available as of Postfix 2.2. +.IP \fBSASL_USERNAME\fR +SASL username specified in the remote client AUTH command. +Available as of Postfix 2.2. +.PP +The \fBPATH\fR environment variable is always reset to a +system\-dependent default path, and environment variables +whose names are blessed by the \fBexport_environment\fR +configuration parameter are exported unchanged. + +The current working directory is the mail queue directory. + +The \fBlocal\fR(8) daemon prepends a "\fBFrom \fIsender time_stamp\fR" +envelope header to each message, prepends an +\fBX\-Original\-To:\fR header with the recipient address as given to +Postfix, prepends an +optional \fBDelivered\-To:\fR +header with the final recipient envelope address, prepends a +\fBReturn\-Path:\fR header with the sender envelope address, +and appends no empty line. +.SH "EXTERNAL FILE DELIVERY" +.na +.nf +.ad +.fi +The delivery format depends on the destination filename syntax. +The default is to use UNIX\-style mailbox format. Specify a name +ending in \fB/\fR for \fBqmail\fR\-compatible \fBmaildir\fR delivery. + +The \fBallow_mail_to_files\fR configuration parameter restricts +delivery to external files. The default setting (\fBalias, +forward\fR) forbids file destinations in \fB:include:\fR files. + +In the case of UNIX\-style mailbox delivery, +the \fBlocal\fR(8) daemon prepends a "\fBFrom \fIsender time_stamp\fR" +envelope header to each message, prepends an +\fBX\-Original\-To:\fR header with the recipient address as given to +Postfix, prepends an +optional \fBDelivered\-To:\fR +header with the final recipient envelope address, prepends a \fB>\fR +character to lines beginning with "\fBFrom \fR", and appends an +empty line. +The envelope sender address is available in the \fBReturn\-Path:\fR +header. +When the destination is a regular file, it is locked for exclusive +access while delivery is in progress. In case of problems, an attempt +is made to truncate a regular file to its original length. + +In the case of \fBmaildir\fR delivery, the local daemon prepends +an optional +\fBDelivered\-To:\fR header with the final envelope recipient address, +and prepends an +\fBX\-Original\-To:\fR header with the recipient address as given to +Postfix. +The envelope sender address is available in the \fBReturn\-Path:\fR +header. +.SH "ADDRESS EXTENSION" +.na +.nf +.ad +.fi +The optional \fBrecipient_delimiter\fR configuration parameter +specifies how to separate address extensions from local recipient +names. + +For example, with "\fBrecipient_delimiter = +\fR", mail for +\fIname\fR+\fIfoo\fR is delivered to the alias \fIname\fR+\fIfoo\fR +or to the alias \fIname\fR, to the destinations listed in +~\fIname\fR/.\fBforward\fR+\fIfoo\fR or in ~\fIname\fR/.\fBforward\fR, +to the mailbox owned by the user \fIname\fR, or it is sent back as +undeliverable. +.SH "DELIVERY RIGHTS" +.na +.nf +.ad +.fi +Deliveries to external files and external commands are made with +the rights of the receiving user on whose behalf the delivery is made. +In the absence of a user context, the \fBlocal\fR(8) daemon uses the +owner rights of the \fB:include:\fR file or alias database. +When those files are owned by the superuser, delivery is made with +the rights specified with the \fBdefault_privs\fR configuration +parameter. +.SH "STANDARDS" +.na +.nf +RFC 822 (ARPA Internet Text Messages) +RFC 3463 (Enhanced status codes) +.SH DIAGNOSTICS +.ad +.fi +Problems and transactions are logged to \fBsyslogd\fR(8) +or \fBpostlogd\fR(8). +Corrupted message files are marked so that the queue +manager can move them to the \fBcorrupt\fR queue afterwards. + +Depending on the setting of the \fBnotify_classes\fR parameter, +the postmaster is notified of bounces and of other trouble. +.SH "SECURITY" +.na +.nf +.ad +.fi +The \fBlocal\fR(8) delivery agent needs a dual personality +1) to access the private Postfix queue and IPC mechanisms, +2) to impersonate the recipient and deliver to recipient\-specified +files or commands. It is therefore security sensitive. + +The \fBlocal\fR(8) delivery agent disallows regular expression +substitution of $1 etc. in \fBalias_maps\fR, because that +would open a security hole. + +The \fBlocal\fR(8) delivery agent will silently ignore +requests to use the \fBproxymap\fR(8) server within +\fBalias_maps\fR. Instead it will open the table directly. +Before Postfix version 2.2, the \fBlocal\fR(8) delivery +agent will terminate with a fatal error. +.SH BUGS +.ad +.fi +For security reasons, the message delivery status of external commands +or of external files is never checkpointed to file. As a result, +the program may occasionally deliver more than once to a command or +external file. Better safe than sorry. + +Mutually\-recursive aliases or ~/.\fBforward\fR files are not detected +early. The resulting mail forwarding loop is broken by the use of the +\fBDelivered\-To:\fR message header. +.SH "CONFIGURATION PARAMETERS" +.na +.nf +.ad +.fi +Changes to \fBmain.cf\fR are picked up automatically, as \fBlocal\fR(8) +processes run for only a limited amount of time. Use the command +"\fBpostfix reload\fR" to speed up a change. + +The text below provides only a parameter summary. See +\fBpostconf\fR(5) for more details including examples. +.SH "COMPATIBILITY CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBbiff (yes)\fR" +Whether or not to use the local biff service. +.IP "\fBexpand_owner_alias (no)\fR" +When delivering to an alias "\fIaliasname\fR" that has an +"owner\-\fIaliasname\fR" companion alias, set the envelope sender +address to the expansion of the "owner\-\fIaliasname\fR" alias. +.IP "\fBowner_request_special (yes)\fR" +Enable special treatment for owner\-\fIlistname\fR entries in the +\fBaliases\fR(5) file, and don't split owner\-\fIlistname\fR and +\fIlistname\fR\-request address localparts when the recipient_delimiter +is set to "\-". +.IP "\fBsun_mailtool_compatibility (no)\fR" +Obsolete SUN mailtool compatibility feature. +.PP +Available in Postfix version 2.3 and later: +.IP "\fBfrozen_delivered_to (yes)\fR" +Update the \fBlocal\fR(8) delivery agent's idea of the Delivered\-To: +address (see prepend_delivered_header) only once, at the start of +a delivery attempt; do not update the Delivered\-To: address while +expanding aliases or .forward files. +.PP +Available in Postfix version 2.5.3 and later: +.IP "\fBstrict_mailbox_ownership (yes)\fR" +Defer delivery when a mailbox file is not owned by its recipient. +.IP "\fBreset_owner_alias (no)\fR" +Reset the \fBlocal\fR(8) delivery agent's idea of the owner\-alias +attribute, when delivering mail to a child alias that does not have +its own owner alias. +.PP +Available in Postfix version 3.0 and later: +.IP "\fBlocal_delivery_status_filter ($default_delivery_status_filter)\fR" +Optional filter for the \fBlocal\fR(8) delivery agent to change the +status code or explanatory text of successful or unsuccessful +deliveries. +.SH "DELIVERY METHOD CONTROLS" +.na +.nf +.ad +.fi +The precedence of \fBlocal\fR(8) delivery methods from high to low is: +aliases, .forward files, mailbox_transport_maps, +mailbox_transport, mailbox_command_maps, mailbox_command, +home_mailbox, mail_spool_directory, fallback_transport_maps, +fallback_transport, and luser_relay. +.IP "\fBalias_maps (see 'postconf -d' output)\fR" +The alias databases that are used for \fBlocal\fR(8) delivery. +.IP "\fBforward_path (see 'postconf -d' output)\fR" +The \fBlocal\fR(8) delivery agent search list for finding a .forward +file with user\-specified delivery methods. +.IP "\fBmailbox_transport_maps (empty)\fR" +Optional lookup tables with per\-recipient message delivery +transports to use for \fBlocal\fR(8) mailbox delivery, whether or not the +recipients are found in the UNIX passwd database. +.IP "\fBmailbox_transport (empty)\fR" +Optional message delivery transport that the \fBlocal\fR(8) delivery +agent should use for mailbox delivery to all local recipients, +whether or not they are found in the UNIX passwd database. +.IP "\fBmailbox_command_maps (empty)\fR" +Optional lookup tables with per\-recipient external commands to use +for \fBlocal\fR(8) mailbox delivery. +.IP "\fBmailbox_command (empty)\fR" +Optional external command that the \fBlocal\fR(8) delivery agent should +use for mailbox delivery. +.IP "\fBhome_mailbox (empty)\fR" +Optional pathname of a mailbox file relative to a \fBlocal\fR(8) user's +home directory. +.IP "\fBmail_spool_directory (see 'postconf -d' output)\fR" +The directory where \fBlocal\fR(8) UNIX\-style mailboxes are kept. +.IP "\fBfallback_transport_maps (empty)\fR" +Optional lookup tables with per\-recipient message delivery +transports for recipients that the \fBlocal\fR(8) delivery agent could +not find in the \fBaliases\fR(5) or UNIX password database. +.IP "\fBfallback_transport (empty)\fR" +Optional message delivery transport that the \fBlocal\fR(8) delivery +agent should use for names that are not found in the \fBaliases\fR(5) +or UNIX password database. +.IP "\fBluser_relay (empty)\fR" +Optional catch\-all destination for unknown \fBlocal\fR(8) recipients. +.PP +Available in Postfix version 2.2 and later: +.IP "\fBcommand_execution_directory (empty)\fR" +The \fBlocal\fR(8) delivery agent working directory for delivery to +external command. +.SH "MAILBOX LOCKING CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBdeliver_lock_attempts (20)\fR" +The maximal number of attempts to acquire an exclusive lock on a +mailbox file or \fBbounce\fR(8) logfile. +.IP "\fBdeliver_lock_delay (1s)\fR" +The time between attempts to acquire an exclusive lock on a mailbox +file or \fBbounce\fR(8) logfile. +.IP "\fBstale_lock_time (500s)\fR" +The time after which a stale exclusive mailbox lockfile is removed. +.IP "\fBmailbox_delivery_lock (see 'postconf -d' output)\fR" +How to lock a UNIX\-style \fBlocal\fR(8) mailbox before attempting delivery. +.SH "RESOURCE AND RATE CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBcommand_time_limit (1000s)\fR" +Time limit for delivery to external commands. +.IP "\fBduplicate_filter_limit (1000)\fR" +The maximal number of addresses remembered by the address +duplicate filter for \fBaliases\fR(5) or \fBvirtual\fR(5) alias expansion, or +for \fBshowq\fR(8) queue displays. +.IP "\fBmailbox_size_limit (51200000)\fR" +The maximal size of any \fBlocal\fR(8) individual mailbox or maildir +file, or zero (no limit). +.PP +Implemented in the qmgr(8) daemon: +.IP "\fBlocal_destination_concurrency_limit (2)\fR" +The maximal number of parallel deliveries via the local mail +delivery transport to the same recipient (when +"local_destination_recipient_limit = 1") or the maximal number of +parallel deliveries to the same local domain (when +"local_destination_recipient_limit > 1"). +.IP "\fBlocal_destination_recipient_limit (1)\fR" +The maximal number of recipients per message delivery via the +local mail delivery transport. +.SH "SECURITY CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBallow_mail_to_commands (alias, forward)\fR" +Restrict \fBlocal\fR(8) mail delivery to external commands. +.IP "\fBallow_mail_to_files (alias, forward)\fR" +Restrict \fBlocal\fR(8) mail delivery to external files. +.IP "\fBcommand_expansion_filter (see 'postconf -d' output)\fR" +Restrict the characters that the \fBlocal\fR(8) delivery agent allows in +$name expansions of $mailbox_command and $command_execution_directory. +.IP "\fBdefault_privs (nobody)\fR" +The default rights used by the \fBlocal\fR(8) delivery agent for delivery +to external file or command. +.IP "\fBforward_expansion_filter (see 'postconf -d' output)\fR" +Restrict the characters that the \fBlocal\fR(8) delivery agent allows in +$name expansions of $forward_path. +.PP +Available in Postfix version 2.2 and later: +.IP "\fBexecution_directory_expansion_filter (see 'postconf -d' output)\fR" +Restrict the characters that the \fBlocal\fR(8) delivery agent allows +in $name expansions of $command_execution_directory. +.PP +Available in Postfix version 2.5.3 and later: +.IP "\fBstrict_mailbox_ownership (yes)\fR" +Defer delivery when a mailbox file is not owned by its recipient. +.SH "MISCELLANEOUS CONTROLS" +.na +.nf +.ad +.fi +.IP "\fBconfig_directory (see 'postconf -d' output)\fR" +The default location of the Postfix main.cf and master.cf +configuration files. +.IP "\fBdaemon_timeout (18000s)\fR" +How much time a Postfix daemon process may take to handle a +request before it is terminated by a built\-in watchdog timer. +.IP "\fBdelay_logging_resolution_limit (2)\fR" +The maximal number of digits after the decimal point when logging +sub\-second delay values. +.IP "\fBexport_environment (see 'postconf -d' output)\fR" +The list of environment variables that a Postfix process will export +to non\-Postfix processes. +.IP "\fBipc_timeout (3600s)\fR" +The time limit for sending or receiving information over an internal +communication channel. +.IP "\fBlocal_command_shell (empty)\fR" +Optional shell program for \fBlocal\fR(8) delivery to non\-Postfix command. +.IP "\fBmax_idle (100s)\fR" +The maximum amount of time that an idle Postfix daemon process waits +for an incoming connection before terminating voluntarily. +.IP "\fBmax_use (100)\fR" +The maximal number of incoming connections that a Postfix daemon +process will service before terminating voluntarily. +.IP "\fBprepend_delivered_header (command, file, forward)\fR" +The message delivery contexts where the Postfix \fBlocal\fR(8) delivery +agent prepends a Delivered\-To: message header with the address +that the mail was delivered to. +.IP "\fBprocess_id (read\-only)\fR" +The process ID of a Postfix command or daemon process. +.IP "\fBprocess_name (read\-only)\fR" +The process name of a Postfix command or daemon process. +.IP "\fBpropagate_unmatched_extensions (canonical, virtual)\fR" +What address lookup tables copy an address extension from the lookup +key to the lookup result. +.IP "\fBqueue_directory (see 'postconf -d' output)\fR" +The location of the Postfix top\-level queue directory. +.IP "\fBrecipient_delimiter (empty)\fR" +The set of characters that can separate a user name from its +extension (example: user+foo), or a .forward file name from its +extension (example: .forward+foo). +.IP "\fBrequire_home_directory (no)\fR" +Require that a \fBlocal\fR(8) recipient's home directory exists +before mail delivery is attempted. +.IP "\fBsyslog_facility (mail)\fR" +The syslog facility of Postfix logging. +.IP "\fBsyslog_name (see 'postconf -d' output)\fR" +A prefix that is prepended to the process name in syslog +records, so that, for example, "smtpd" becomes "prefix/smtpd". +.PP +Available in Postfix version 3.3 and later: +.IP "\fBenable_original_recipient (yes)\fR" +Enable support for the original recipient address after an +address is rewritten to a different address (for example with +aliasing or with canonical mapping). +.IP "\fBservice_name (read\-only)\fR" +The master.cf service name of a Postfix daemon process. +.PP +Available in Postfix 3.5 and later: +.IP "\fBinfo_log_address_format (external)\fR" +The email address form that will be used in non\-debug logging +(info, warning, etc.). +.SH "FILES" +.na +.nf +The following are examples; details differ between systems. +$HOME/.forward, per\-user aliasing +/etc/aliases, system\-wide alias database +/var/spool/mail, system mailboxes +.SH "SEE ALSO" +.na +.nf +qmgr(8), queue manager +bounce(8), delivery status reports +newaliases(1), create/update alias database +postalias(1), create/update alias database +aliases(5), format of alias database +postconf(5), configuration parameters +master(5), generic daemon options +postlogd(8), Postfix logging +syslogd(8), system logging +.SH "LICENSE" +.na +.nf +.ad +.fi +The Secure Mailer license must be distributed with this software. +.SH HISTORY +.ad +.fi +.ad +.fi +The \fBDelivered\-To:\fR message header appears in the \fBqmail\fR +system by Daniel Bernstein. + +The \fImaildir\fR structure appears in the \fBqmail\fR system +by Daniel Bernstein. +.SH "AUTHOR(S)" +.na +.nf +Wietse Venema +IBM T.J. Watson Research +P.O. Box 704 +Yorktown Heights, NY 10598, USA + +Wietse Venema +Google, Inc. +111 8th Avenue +New York, NY 10011, USA |