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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 12:06:34 +0000 |
| commit | 5e61585d76ae77fd5e9e96ebabb57afa4d74880d (patch) | |
| tree | 2b467823aaeebc7ef8bc9e3cabe8074eaef1666d /html/flush.8.html | |
| parent | Initial commit. (diff) | |
| download | postfix-5e61585d76ae77fd5e9e96ebabb57afa4d74880d.tar.xz postfix-5e61585d76ae77fd5e9e96ebabb57afa4d74880d.zip | |
Adding upstream version 3.5.24.upstream/3.5.24upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'html/flush.8.html')
| -rw-r--r-- | html/flush.8.html | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/html/flush.8.html b/html/flush.8.html new file mode 100644 index 0000000..a14f818 --- /dev/null +++ b/html/flush.8.html @@ -0,0 +1,179 @@ +<!doctype html public "-//W3C//DTD HTML 4.01 Transitional//EN" + "http://www.w3.org/TR/html4/loose.dtd"> +<html> <head> +<meta http-equiv="Content-Type" content="text/html; charset=us-ascii"> +<title> Postfix manual - flush(8) </title> +</head> <body> <pre> +FLUSH(8) FLUSH(8) + +<b>NAME</b> + flush - Postfix fast flush server + +<b>SYNOPSIS</b> + <b>flush</b> [generic Postfix daemon options] + +<b>DESCRIPTION</b> + The <a href="flush.8.html"><b>flush</b>(8)</a> server maintains a record of deferred mail by destination. + This information is used to improve the performance of the SMTP <b>ETRN</b> + request, and of its command-line equivalent, "<b>sendmail -qR</b>" or + "<b>postqueue -f</b>". This program expects to be run from the <a href="master.8.html"><b>master</b>(8)</a> + process manager. + + The record is implemented as a per-destination logfile with as contents + the queue IDs of deferred mail. A logfile is append-only, and is trun- + cated when delivery is requested for the corresponding destination. A + destination is the part on the right-hand side of the right-most <b>@</b> in + an email address. + + Per-destination logfiles of deferred mail are maintained only for eli- + gible destinations. The list of eligible destinations is specified with + the <b><a href="postconf.5.html#fast_flush_domains">fast_flush_domains</a></b> configuration parameter, which defaults to + <b>$<a href="postconf.5.html#relay_domains">relay_domains</a></b>. + + This server implements the following requests: + + <b>add</b> <i>sitename queueid</i> + Inform the <a href="flush.8.html"><b>flush</b>(8)</a> server that the message with the specified + queue ID is queued for the specified destination. + + <b>send_site</b> <i>sitename</i> + Request delivery of mail that is queued for the specified desti- + nation. + + <b>send_file</b> <i>queueid</i> + Request delivery of the specified deferred message. + + <b>refresh</b> + Refresh non-empty per-destination logfiles that were not read in + <b>$<a href="postconf.5.html#fast_flush_refresh_time">fast_flush_refresh_time</a></b> hours, by simulating send requests (see + above) for the corresponding destinations. + + Delete empty per-destination logfiles that were not updated in + <b>$<a href="postconf.5.html#fast_flush_purge_time">fast_flush_purge_time</a></b> days. + + This request completes in the background. + + <b>purge</b> Do a <b>refresh</b> for all per-destination logfiles. + +<b>SECURITY</b> + The <a href="flush.8.html"><b>flush</b>(8)</a> server is not security-sensitive. It does not talk to the + network, and it does not talk to local users. The fast flush server + can run chrooted at fixed low privilege. + +<b>DIAGNOSTICS</b> + Problems and transactions are logged to <b>syslogd</b>(8) or <a href="postlogd.8.html"><b>postlogd</b>(8)</a>. + +<b>BUGS</b> + Fast flush logfiles are truncated only after a "send" request, not when + mail is actually delivered, and therefore can accumulate outdated or + redundant data. In order to maintain sanity, "refresh" must be executed + periodically. This can be automated with a suitable wakeup timer set- + ting in the <a href="master.5.html"><b>master.cf</b></a> configuration file. + + Upon receipt of a request to deliver mail for an eligible destination, + the <a href="flush.8.html"><b>flush</b>(8)</a> server requests delivery of all messages that are listed + in that destination's logfile, regardless of the recipients of those + messages. This is not an issue for mail that is sent to a <b><a href="postconf.5.html#relay_domains">relay_domains</a></b> + destination because such mail typically only has recipients in one + domain. + +<b>CONFIGURATION PARAMETERS</b> + Changes to <a href="postconf.5.html"><b>main.cf</b></a> are picked up automatically as <a href="flush.8.html"><b>flush</b>(8)</a> processes + run for only a limited amount of time. Use the command "<b>postfix reload</b>" + to speed up a change. + + The text below provides only a parameter summary. See <a href="postconf.5.html"><b>postconf</b>(5)</a> for + more details including examples. + + <b><a href="postconf.5.html#config_directory">config_directory</a> (see 'postconf -d' output)</b> + The default location of the Postfix <a href="postconf.5.html">main.cf</a> and <a href="master.5.html">master.cf</a> con- + figuration files. + + <b><a href="postconf.5.html#daemon_timeout">daemon_timeout</a> (18000s)</b> + How much time a Postfix daemon process may take to handle a + request before it is terminated by a built-in watchdog timer. + + <b><a href="postconf.5.html#fast_flush_domains">fast_flush_domains</a> ($<a href="postconf.5.html#relay_domains">relay_domains</a>)</b> + Optional list of destinations that are eligible for per-destina- + tion logfiles with mail that is queued to those destinations. + + <b><a href="postconf.5.html#fast_flush_refresh_time">fast_flush_refresh_time</a> (12h)</b> + The time after which a non-empty but unread per-destination + "fast flush" logfile needs to be refreshed. + + <b><a href="postconf.5.html#fast_flush_purge_time">fast_flush_purge_time</a> (7d)</b> + The time after which an empty per-destination "fast flush" log- + file is deleted. + + <b><a href="postconf.5.html#ipc_timeout">ipc_timeout</a> (3600s)</b> + The time limit for sending or receiving information over an + internal communication channel. + + <b><a href="postconf.5.html#max_idle">max_idle</a> (100s)</b> + The maximum amount of time that an idle Postfix daemon process + waits for an incoming connection before terminating voluntarily. + + <b><a href="postconf.5.html#max_use">max_use</a> (100)</b> + The maximal number of incoming connections that a Postfix daemon + process will service before terminating voluntarily. + + <b><a href="postconf.5.html#parent_domain_matches_subdomains">parent_domain_matches_subdomains</a> (see 'postconf -d' output)</b> + A list of Postfix features where the pattern "example.com" also + matches subdomains of example.com, instead of requiring an + explicit ".example.com" pattern. + + <b><a href="postconf.5.html#process_id">process_id</a> (read-only)</b> + The process ID of a Postfix command or daemon process. + + <b><a href="postconf.5.html#process_name">process_name</a> (read-only)</b> + The process name of a Postfix command or daemon process. + + <b><a href="postconf.5.html#queue_directory">queue_directory</a> (see 'postconf -d' output)</b> + The location of the Postfix top-level queue directory. + + <b><a href="postconf.5.html#syslog_facility">syslog_facility</a> (mail)</b> + The syslog facility of Postfix logging. + + <b><a href="postconf.5.html#syslog_name">syslog_name</a> (see 'postconf -d' output)</b> + A prefix that is prepended to the process name in syslog + records, so that, for example, "smtpd" becomes "prefix/smtpd". + + Available in Postfix 3.3 and later: + + <b><a href="postconf.5.html#service_name">service_name</a> (read-only)</b> + The <a href="master.5.html">master.cf</a> service name of a Postfix daemon process. + +<b>FILES</b> + /var/spool/postfix/flush, "fast flush" logfiles. + +<b>SEE ALSO</b> + <a href="smtpd.8.html">smtpd(8)</a>, SMTP server + <a href="qmgr.8.html">qmgr(8)</a>, queue manager + <a href="postconf.5.html">postconf(5)</a>, configuration parameters + <a href="master.5.html">master(5)</a>, generic daemon options + <a href="master.8.html">master(8)</a>, process manager + <a href="postlogd.8.html">postlogd(8)</a>, Postfix logging + syslogd(8), system logging + +<b>README FILES</b> + <a href="ETRN_README.html">ETRN_README</a>, Postfix ETRN howto + +<b>LICENSE</b> + The Secure Mailer license must be distributed with this software. + +<b>HISTORY</b> + This service was introduced with Postfix version 1.0. + +<b>AUTHOR(S)</b> + 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 + + FLUSH(8) +</pre> </body> </html> |