<b>-h</b> Show parameter values only, not the ``name = ''
label that normally precedes the value.
- <b>-m</b> List the names of all supported lookup table types.
-
- <b>-l</b> List the names of all supported mailbox locking
+ <b>-l</b> List the names of all supported mailbox locking
methods.
+ <b>-m</b> List the names of all supported lookup table types.
+
<b>-n</b> Print non-default parameter settings only.
<b>-v</b> Enable verbose logging for debugging purposes. Mul-
<b>NAME</b>
- virtual - Postfix virtual mail delivery
+ virtual - Postfix virtual domain mail delivery agent
<b>SYNOPSIS</b>
<b>virtual</b> [generic Postfix daemon options]
<b>DESCRIPTION</b>
+ This daemon is designed for ISP's offering virtual mail
+ hosting services. Originally based on the local delivery
+ agent, this agent locates user mailboxes via map lookups
+ of the full recipient address, rather than hard-coded unix
+ password file searches of the local part only.
+
The <b>virtual</b> daemon processes delivery requests from the
Postfix queue manager to deliver mail to virtual local
recipients. Each delivery request specifies a queue file,
or more recipients. This program expects to be run from
the <a href="master.8.html"><b>master</b>(8)</a> process manager.
- This daemon is designed for ISP's offering virtual mail
- hosting services. Originally based on the local delivery
- agent, this agent locates user mailboxes via map lookups
- of the full recipient address, rather than hard-coded unix
- password file searches of the local part only.
-
The <b>virtual</b> daemon updates queue files and marks recipi-
ents as finished, or it informs the queue manager that
delivery should be tried again at a later time. Delivery
mon as appropriate.
<b>MAILBOX</b> <b>DELIVERY</b>
- The default per-user mailbox is a file in the UNIX mail
- spool directory (<b>/var/mail/</b><i>user</i> or <b>/var/spool/mail/</b><i>user</i>);
- the location can be specified with the <b>mail</b><i>_</i><b>spool</b><i>_</i><b>direc-</b>
- <b>tory</b> configuration parameter.
+ The <b>virtual</b> delivery agent can deliver to UNIX-style mail-
+ box file or to qmail-style maildir files. The pathname and
+ delivery mailbox style are controlled by the <b>virtual</b><i>_</i><b>mail-</b>
+ <b>box</b><i>_</i><b>base</b> and <b>virtual</b><i>_</i><b>mailbox</b><i>_</i><b>maps</b> configuration parameters
+ (see below).
In the case of UNIX-style mailbox delivery, the <b>local</b> dae-
mon prepends a "<b>From</b> <i>sender</i> <i>time_stamp</i>" envelope header to
- each message, prepends a <b>Delivered-To:</b> header with the
+ each message, prepends a <b>Delivered-To:</b> header with the
envelope recipient address, prepends a <b>Return-Path:</b> header
- with the envelope sender address, prepends a > character
- to lines beginning with "<b>From</b> ", and appends an empty
- line. The mailbox is locked for exclusive access while
- delivery is in progress. In case of problems, an attempt
+ with the envelope sender address, prepends a > character
+ to lines beginning with "<b>From</b> ", 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 <b>maildir</b> delivery, the local daemon prepends
a <b>Delivered-To:</b> header with the envelope recipient address
- and prepends a <b>Return-Path:</b> header with the envelope
+ and prepends a <b>Return-Path:</b> header with the envelope
sender address.
<b>DELIVERY</b> <b>RIGHTS</b>
- Deliveries to mailboxes are made with the rights of the
- receiving user on whose behalf the delivery is made.
-
-<b>STANDARDS</b>
- <a href="http://www.faqs.org/rfcs/rfc822.html">RFC 822</a> (ARPA Internet Text Messages)
+ Deliveries are made with the user and group privileges
+ that are listed in the tables specified with the <b>vir-</b>
+ <b>tual</b><i>_</i><b>uid</b><i>_</i><b>maps</b> and <b>virtual</b><i>_</i><b>gid</b><i>_</i><b>maps</b>, respectively.
+ The <b>virtual</b><i>_</i><b>minimum</b><i>_</i><b>uid</b> parameter specifies a lower bound
VIRTUAL(8) VIRTUAL(8)
+ on user ID values that may be specified in <b>vir-</b>
+ <b>tual</b><i>_</i><b>uid</b><i>_</i><b>maps</b>. Mail will not be delivered when a too low
+ UID value is found.
+
+<b>STANDARDS</b>
+ <a href="http://www.faqs.org/rfcs/rfc822.html">RFC 822</a> (ARPA Internet Text Messages)
+
<b>DIAGNOSTICS</b>
- Problems and transactions are logged to <b>syslogd</b>(8). Cor-
- rupted message files are marked so that the queue manager
+ Problems and transactions are logged to <b>syslogd</b>(8). Cor-
+ rupted message files are marked so that the queue manager
can move them to the <b>corrupt</b> queue afterwards.
- Depending on the setting of the <b>notify</b><i>_</i><b>classes</b> parameter,
- the postmaster is notified of bounces and of other trou-
+ Depending on the setting of the <b>notify</b><i>_</i><b>classes</b> parameter,
+ the postmaster is notified of bounces and of other trou-
ble.
<b>CONFIGURATION</b> <b>PARAMETERS</b>
- The following <b>main.cf</b> parameters are especially relevant
- to this program. See the Postfix <b>main.cf</b> file for syntax
- details and for default values. Use the <b>postfix</b> <b>reload</b>
+ The following <b>main.cf</b> parameters are especially relevant
+ to this program. See the Postfix <b>main.cf</b> file for syntax
+ details and for default values. Use the <b>postfix</b> <b>reload</b>
command after a configuration change.
<b>Mailbox</b> <b>delivery</b>
<b>virtual</b><i>_</i><b>mailbox</b><i>_</i><b>base</b>
- Specifies a path that is prepended to all mailbox
- paths. This is a safety measure to ensure an out of
- control map doesn't litter the filesystem with
- mailboxes. While it could be set to "/", this isn't
- recommended.
+ Specifies a path that is prepended to all mailbox
+ or maildir paths. This is a safety measure to
+ ensure that an out of control map in <b>virtual</b><i>_</i><b>mail-</b>
+ <b>box</b><i>_</i><b>maps</b> doesn't litter the filesystem with mail-
+ boxes. While it could be set to "/", this setting
+ isn't recommended.
<b>virtual</b><i>_</i><b>mailbox</b><i>_</i><b>maps</b>
Recipients are looked up in this map to determine
- the path to their mailbox. If the returned path
- ends in a slash ("/"), maildir-style delivery is
- carried out, otherwise the path is assumed to spec-
- ify a mailbox file. Note that <b>virtual</b><i>_</i><b>mailbox</b><i>_</i><b>base</b>
- is unconditionally prepended to this path.
+ the path to their mailbox or maildir. If the
+ returned path ends in a slash ("/"), maildir-style
+ delivery is carried out, otherwise the path is
+ assumed to specify a mailbox file.
+
+ Note that <b>virtual</b><i>_</i><b>mailbox</b><i>_</i><b>base</b> is unconditionally
+ prepended to this path.
<b>virtual</b><i>_</i><b>minimum</b><i>_</i><b>uid</b>
Specifies a minimum uid that will be accepted as a
<b>virtual</b><i>_</i><b>gid</b><i>_</i><b>maps</b>
Recipients are looked up in this map to determine
- the GID to be used when writing to the target mail-
- box.
-
-<b>Locking</b> <b>controls</b>
- <b>mailbox</b><i>_</i><b>delivery</b><i>_</i><b>lock</b>
- How to lock UNIX-style mailboxes: one or more of
- <b>flock</b>, <b>fcntl</b> or <b>dotlock</b>.
-
- <b>deliver</b><i>_</i><b>lock</b><i>_</i><b>attempts</b>
- Limit the number of attempts to acquire an
VIRTUAL(8) VIRTUAL(8)
- exclusive lock on a mailbox file.
+ the GID to be used when writing to the target mail-
+ box.
+
+<b>Locking</b> <b>controls</b>
+ <b>mailbox</b><i>_</i><b>delivery</b><i>_</i><b>lock</b>
+ How to lock UNIX-style mailboxes: one or more of
+ <b>flock</b>, <b>fcntl</b> or <b>dotlock</b>.
+
+ Use the command <b>postconf</b> <b>-m</b> to find out what lock-
+ ing methods are available on your system.
+
+ <b>deliver</b><i>_</i><b>lock</b><i>_</i><b>attempts</b>
+ Limit the number of attempts to acquire an exclu-
+ sive lock on a mailbox file.
<b>deliver</b><i>_</i><b>lock</b><i>_</i><b>delay</b>
- Time in seconds between successive attempts to
- acquire an exclusive lock on a mailbox file.
+ Time (default: seconds) between successive attempts
+ to acquire an exclusive lock on a mailbox file.
<b>stale</b><i>_</i><b>lock</b><i>_</i><b>time</b>
- Limit the time after which a stale lockfile is
+ Limit the time after which a stale lockfile is
removed.
<b>Resource</b> <b>controls</b>
<b>default</b><i>_</i><b>destination</b><i>_</i><b>concurrency</b><i>_</i><b>limit</b> parameter.
<b>virtual</b><i>_</i><b>destination</b><i>_</i><b>recipient</b><i>_</i><b>limit</b>
- Limit the number of recipients per message deliv-
- ery. The default limit is taken from the
+ Limit the number of recipients per message deliv-
+ ery. The default limit is taken from the
<b>default</b><i>_</i><b>destination</b><i>_</i><b>recipient</b><i>_</i><b>limit</b> parameter.
<b>HISTORY</b>
- This agent was originally based on the local delivery
- agent. Modifications mainly consisted of removing code
- that wasn't applicable or wasn't safe in this context
+ This agent was originally based on the local delivery
+ agent. Modifications mainly consisted of removing code
+ that wasn't applicable or wasn't safe in this context
(aliases, .forwards, program aliases).
- The <b>Delivered-To:</b> header appears in the <b>qmail</b> system by
+ The <b>Delivered-To:</b> header appears in the <b>qmail</b> system by
Daniel Bernstein.
- The <i>maildir</i> structure appears in the <b>qmail</b> system by
+ The <i>maildir</i> structure appears in the <b>qmail</b> system by
Daniel Bernstein.
<b>SEE</b> <b>ALSO</b>
<a href="qmgr.8.html">qmgr(8)</a> queue manager
<b>LICENSE</b>
- The Secure Mailer license must be distributed with this
+ The Secure Mailer license must be distributed with this
software.
+
+
+ 3
+
+
+
+
+
+VIRTUAL(8) VIRTUAL(8)
+
+
<b>AUTHOR(S)</b>
Wietse Venema
IBM T.J. Watson Research
- 3
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ 4
</pre> </body> </html>
.IP \fB-h\fR
Show parameter values only, not the ``name = '' label
that normally precedes the value.
-.IP \fB-m\fR
-List the names of all supported lookup table types.
.IP \fB-l\fR
List the names of all supported mailbox locking methods.
+.IP \fB-m\fR
+List the names of all supported lookup table types.
.IP \fB-n\fR
Print non-default parameter settings only.
.IP \fB-v\fR
.SH NAME
virtual
\-
-Postfix virtual mail delivery
+Postfix virtual domain mail delivery agent
.SH SYNOPSIS
.na
.nf
.SH DESCRIPTION
.ad
.fi
+This daemon is designed for ISP's offering virtual mail hosting
+services. Originally based on the local delivery agent, this agent
+locates user mailboxes via map lookups of the full recipient
+address, rather than hard-coded unix password file searches of
+the local part only.
+
The \fBvirtual\fR daemon processes delivery requests from the
Postfix queue manager to deliver mail to virtual local recipients.
Each delivery request specifies a queue file, a sender address,
This program expects to be run from the \fBmaster\fR(8) process
manager.
-This daemon is designed for ISP's offering virtual mail hosting
-services. Originally based on the local delivery agent, this agent
-locates user mailboxes via map lookups of the full recipient
-address, rather than hard-coded unix password file searches of
-the local part only.
-
The \fBvirtual\fR 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 problem reports are sent
.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.
+The \fBvirtual\fR delivery agent can deliver to UNIX-style mailbox
+file or to qmail-style maildir files. The pathname and delivery
+mailbox style are controlled by the \fBvirtual_mailbox_base\fR
+and \fBvirtual_mailbox_maps\fR configuration parameters (see below).
In the case of UNIX-style mailbox delivery,
the \fBlocal\fR daemon prepends a "\fBFrom \fIsender time_stamp\fR"
.nf
.ad
.fi
-Deliveries to mailboxes are made with the rights of the receiving
-user on whose behalf the delivery is made.
+Deliveries are made with the user and group privileges that are
+listed in the tables specified with the \fBvirtual_uid_maps\fR
+and \fBvirtual_gid_maps\fR, respectively.
+
+The \fBvirtual_minimum_uid\fR parameter specifies a lower bound on
+user ID values that may be specified in \fBvirtual_uid_maps\fR. Mail
+will not be delivered when a too low UID value is found.
.SH STANDARDS
.na
.nf
.ad
.fi
.IP \fBvirtual_mailbox_base\fR
-Specifies a path that is prepended to all mailbox paths. This is
-a safety measure to ensure an out of control map doesn't litter
-the filesystem with mailboxes. While it could be set to "/",
-this isn't recommended.
+Specifies a path that is prepended to all mailbox or maildir paths.
+This is a safety measure to ensure that an out of control map in
+\fBvirtual_mailbox_maps\fR doesn't litter the filesystem with mailboxes.
+While it could be set to "/", this setting isn't recommended.
.IP \fBvirtual_mailbox_maps\fR
-Recipients are looked up in this map to determine the path
-to their mailbox. If the returned path ends in a slash
-("/"), maildir-style delivery is carried out, otherwise
-the path is assumed to specify a mailbox file. Note that
-\fBvirtual_mailbox_base\fR is unconditionally prepended to
-this path.
+Recipients are looked up in this map to determine the path to
+their mailbox or maildir. If the returned path ends in a slash
+("/"), maildir-style delivery is carried out, otherwise the
+path is assumed to specify a mailbox file.
+
+Note that \fBvirtual_mailbox_base\fR is unconditionally prepended
+to this path.
.IP \fBvirtual_minimum_uid\fR
Specifies a minimum uid that will be accepted as a return from
a \fBvirtual_uid_maps\fR lookup. Returned values less than this
.IP \fBmailbox_delivery_lock\fR
How to lock UNIX-style mailboxes: one or more of \fBflock\fR,
\fBfcntl\fR or \fBdotlock\fR.
+
+Use the command \fBpostconf -m\fR to find out what locking methods
+are available on your system.
.IP \fBdeliver_lock_attempts\fR
Limit the number of attempts to acquire an exclusive lock
on a mailbox file.
.IP \fBdeliver_lock_delay\fR
-Time in seconds between successive attempts to acquire
+Time (default: seconds) between successive attempts to acquire
an exclusive lock on a mailbox file.
.IP \fBstale_lock_time\fR
Limit the time after which a stale lockfile is removed.
* Version of this program.
*/
#define VAR_MAIL_VERSION "mail_version"
-#define DEF_MAIL_VERSION "Snapshot-20001221"
+#define DEF_MAIL_VERSION "Snapshot-20001224"
extern char *var_mail_version;
/* LICENSE
static void plmysql_connect_single(HOST *, char *, char *, char *);
static int plmysql_ready_reconn(HOST *);
static void dict_mysql_update(DICT *, const char *, const char *);
-static void dict_mysql_delete(struct DICT *, const char *);
-static void dict_mysql_sequence(struct DICT *, const int, const char **, const char **);
+static void dict_mysql_delete(DICT *, const char *);
+static void dict_mysql_sequence(DICT *, const int, const char **, const char **);
static const char *dict_mysql_lookup(DICT *, const char *);
DICT *dict_mysql_open(const char *, int, int);
static void dict_mysql_close(DICT *);
/* SYNOPSIS
/* \fBvirtual\fR [generic Postfix daemon options]
/* DESCRIPTION
-/* This daemon is designed for ISP's offering virtual mail hosting
-/* services. Originally based on the local delivery agent, this agent
-/* locates user mailboxes via map lookups of the full recipient
-/* address, rather than hard-coded unix password file searches of
-/* the local part only.
+/* The \fBvirtual\fR delivery agent is designed for virtual mail
+/* hosting services. Originally based on the Postfix local delivery
+/* agent, this agent looks up recipients with map lookups of their
+/* full recipient address, instead of using hard-coded unix password
+/* file lookups of the address local part only.
/*
-/* The \fBvirtual\fR daemon processes delivery requests from the
-/* Postfix queue manager to deliver mail to virtual 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.
+/* This delivery agent only delivers mail. Other features such as
+/* mail forwarding, out-of-office notifications, etc., must be
+/* configured via virtual maps or via similar lookup mechanisms.
+/* MAILBOX LOCATION
+/* .ad
+/* .fi
+/* The mailbox location is controlled by the \fBvirtual_mailbox_base\fR
+/* and \fBvirtual_mailbox_maps\fR configuration parameters (see below).
+/* The pathname is constructed as follows:
/*
-/* The \fBvirtual\fR 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 problem reports are sent
-/* to the \fBbounce\fR(8) or \fBdefer\fR(8) daemon as appropriate.
-/* MAILBOX DELIVERY
+/* .ti +2
+/* \fB$virtual_mailbox_base/$virtual_mailbox_maps(\fIrecipient\fB)\fR
+/*
+/* where \fIrecipient\fR is the full recipient address.
+/* UNIX MAILBOX FORMAT
/* .ad
/* .fi
-/* The \fBvirtual\fR delivery agent can deliver to UNIX-style mailbox
-/* file or to qmail-style maildir files. The pathname and delivery
-/* mailbox style are controlled by the $\fBvirtual_mailbox_base\fR
-/* and \fB$virtual_mailbox_maps\fR parameters (see below).
+/* When the mailbox location does not end in \fB/\fR, the message
+/* is delivered in UNIX mailbox format. This format stores multiple
+/* messages in one textfile.
+/*
+/* The \fBvirtual\fR delivery agent prepends a "\fBFrom \fIsender
+/* time_stamp\fR" envelope header to each message, prepends a
+/* \fBDelivered-To:\fR message header with the envelope recipient
+/* address, prepends a \fBReturn-Path:\fR message header with the
+/* envelope sender address, prepends a \fB>\fR character to lines
+/* beginning with "\fBFrom \fR", and appends an empty line.
/*
-/* In the case of UNIX-style mailbox delivery,
-/* the \fBlocal\fR daemon prepends a "\fBFrom \fIsender time_stamp\fR"
-/* envelope header to each message, prepends a \fBDelivered-To:\fR header
-/* with the 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
-/* a \fBDelivered-To:\fR header with the envelope recipient address
-/* and prepends a \fBReturn-Path:\fR header with the envelope sender
-/* address.
-/* DELIVERY RIGHTS
+/* QMAIL MAILDIR FORMAT
/* .ad
/* .fi
-/* Deliveries to mailboxes are made with the UID and GID that are listed
-/* for the recipient in the tables listed in the \fB$virtual_uid_maps\fR
-/* and \fB$virtual_gid_maps\fR, respectively.
+/* When the mailbox location ends in \fB/\fR, the message is delivered
+/* in qmail \fBmaildir\fR format. This format stores one message per file.
+/*
+/* The \fBvirtual\fR delivery agent daemon prepends a \fBDelivered-To:\fR
+/* message header with the envelope recipient address and prepends a
+/* \fBReturn-Path:\fR message header with the envelope sender address.
/*
-/* The \fBvirtual_minimum_uid\fR parameter specifies a lower bound on
-/* UID values that may be specified in \fB$virtual_uid_maps\fR. Mail
-/* will not be delivered when an invalid UID is found.
+/* By definition, \fBmaildir\fR format does not require file locking
+/* during mail delivery or retrieval.
+/* MAILBOX OWNERSHIP
+/* .ad
+/* .fi
+/* Mailbox ownership is controlled by the \fBvirtual_owner_maps\fR
+/* lookup tables. These tables can perform the following mappings:
+/* .IP "recipient username"
+/* The mailbox is owned by the specified UNIX user.
+/* .IP "recipient uid:gid"
+/* The mailbox is owned by the specified numerical user and group ID.
+/* BACKWARDS COMPATIBILITY
+/* .ad
+/* .fi
+/* For backwards compatibility, mailbox ownership can also be specified
+/* through separate \fBvirtual_uid_maps\fR and \fBvirtual_gid_maps\fR
+/* tables.
+/* SAFETY
+/* .ad
+/* .fi
+/* The \fBvirtual_minimum_uid\fR parameter imposes a lower bound on
+/* numerical user ID values that may be specified in any
+/* \fBvirtual_owner_maps\fR or \fBvirtual_uid_maps\fR.
/* STANDARDS
/* RFC 822 (ARPA Internet Text Messages)
/* DIAGNOSTICS
+/* Mail bounces when the recipient has no mailbox or when the
+/* recipient is over disk quota. In all other cases, mail for
+/* an existing recipient is deferred and a warning is logged.
+/*
/* Problems and transactions are logged to \fBsyslogd\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.
+/* BUGS
+/* This delivery agent silently ignores address extensions.
/* CONFIGURATION PARAMETERS
/* .ad
/* .fi
/* \fBvirtual_mailbox_maps\fR doesn't litter the filesystem with mailboxes.
/* While it could be set to "/", this setting isn't recommended.
/* .IP \fBvirtual_mailbox_maps\fR
-/* Recipients are looked up in this map to determine the path to
+/* Recipients are looked up in these maps to determine the path to
/* their mailbox or maildir. If the returned path ends in a slash
/* ("/"), maildir-style delivery is carried out, otherwise the
/* path is assumed to specify a mailbox file.
/* to this path.
/* .IP \fBvirtual_minimum_uid\fR
/* Specifies a minimum uid that will be accepted as a return from
-/* a \fBvirtual_uid_maps\fR lookup. Returned values less than this
-/* will be rejected, and the message will be deferred.
+/* a \fBvirtual_owner_maps\fR or \fBvirtual_uid_maps\fR lookup.
+/* Returned values less than this will be rejected, and the message
+/* will be deferred.
+/* .IP \fBvirtual_owner_maps\fR
+/* Recipients are looked up in these maps to determine the UNIX user
+/* name of the mailbox owner, or the numerical user and group ID
+/* in numerical \fIuid:gid\fR format.
/* .IP \fBvirtual_uid_maps\fR
-/* Recipients are looked up in this map to determine the UID to be
+/* Recipients are looked up in these maps to determine the user ID to be
/* used when writing to the target mailbox.
+/* .sp
+/* This feature exists for backwards compatibility; it will go away.
/* .IP \fBvirtual_gid_maps\fR
-/* Recipients are looked up in this map to determine the GID to be
+/* Recipients are looked up in these maps to determine the group ID to be
/* used when writing to the target mailbox.
+/* .sp
+/* This feature exists for backwards compatibility; it will go away.
/* .SH "Locking controls"
/* .ad
/* .fi
/* .IP \fBmailbox_delivery_lock\fR
/* How to lock UNIX-style mailboxes: one or more of \fBflock\fR,
/* \fBfcntl\fR or \fBdotlock\fR.
+/*
+/* Use the command \fBpostconf -m\fR to find out what locking methods
+/* are available on your system.
/* .IP \fBdeliver_lock_attempts\fR
/* Limit the number of attempts to acquire an exclusive lock
-/* on a mailbox file.
+/* on a UNIX-style mailbox file.
/* .IP \fBdeliver_lock_delay\fR
-/* Time in seconds between successive attempts to acquire
-/* an exclusive lock on a mailbox file.
+/* Time (default: seconds) between successive attempts to acquire
+/* an exclusive lock on a UNIX-style mailbox file.
/* .IP \fBstale_lock_time\fR
-/* Limit the time after which a stale lockfile is removed.
+/* Limit the time after which a stale lockfile is removed (applicable
+/* to UNIX-style mailboxes only).
/* .SH "Resource controls"
/* .ad
/* .fi
/* HISTORY
/* .ad
/* .fi
-/* This agent was originally based on the local delivery
-/* agent. Modifications mainly consisted of removing code that wasn't
-/* applicable or wasn't safe in this context (aliases, .forwards,
-/* program aliases).
+/* This agent was originally based on the Postfix local delivery
+/* agent. Modifications mainly consisted of removing code that either
+/* was not applicable or that was not safe in this context: aliases,
+/* ~user/.forward files, delivery to "|command" or to /file/name.
/*
/* The \fBDelivered-To:\fR header appears in the \fBqmail\fR system
/* by Daniel Bernstein.
projects / thirdparty / postfix.git / commitdiff
