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PFLOGSUMM(1) User Contributed Perl Documentation PFLOGSUMM(1) NAME pflogsumm - Produce Postfix MTA logfile summary Copyright (C) 1998-2026 by James S. Seymour, Release 1.2.1 SYNOPSIS pflogsumm [--config <file>] [--bounce-detail <cnt>] [--colwidth <n>] [-d|--date-range <date [range]>] [--deferral-detail <cnt>] [--detail <cnt>] [--dow0mon] [-e|--extended-detail] [--expired-detail <cnt>] [-h|--host-cnt <cnt>] [-i|--ignore-case] [--iso-date-time] [-m|--uucp-mung] [--mailq] [--no-no-msg-size] [--problems-first] [--pscrn-detail <cnt>] [--pscrn-stats] [-q|--quiet] [--rej-add-from] [--rej-add-to] [--reject-de- tail <cnt>] [--smtpd-stats] [--srs-mung] [--ssl-tls-stats] [--syslog-name <string>] [-u|--user-cnt <cnt>] [--unprocd-file <filename>] [--use-orig-to] [--verbose-msg-detail] [--verp-mung [n]] [--warning-detail <cnt>] [-x|--de- bug <file>] [--zero-fill] [file1 [filen]] pflogsumm --[dump-config|help|version] Note: Where both long- and short-form options exist only the latter are shown above. See man page for long-form equivalents. If no file(s) specified, reads from stdin. Output is to stdout. Errors to stderr. DESCRIPTION Pflogsumm is a log analyzer/summarizer for the Postfix MTA. It is designed to provide an over-view of Postfix activity, with just enough detail to give the administrator a "heads up" for potential trouble spots. Pflogsumm generates summaries and, in some cases, detailed reports of mail server traffic volumes, rejected and bounced email, and server warnings, errors and panics. OPTIONS --bounce-detail <cnt> Limit detailed bounce reports to the top <cnt>. 0 to suppress entirely. --config <config file> Path to a configuration file containing pflogsumm options. Supports all standard command-line options (without the leading "-" or "--"). Options like "config", "dump-config", "help", and "version" technically work here, too, though they're not particularly useful in this context. Command-line arguments override config file values except for boolean options. --colwidth <n> Maximum report output width. Default is 80 columns. 0 = unlimited. N.B.: --verbose-msg-detail overrides -d <arg> --date-range <arg> Limits the report to the specified date or range. Accepted values: today yesterday "this week" / "last week" "this month" / "last month" YYYY-MM[-DD] "YYYY-MM[-DD] YYYY-MM[-DD]" These options do what they suggest, with one important caveat: ISO 8601 / RFC 3339-style dates and ranges may not yield accurate results when used with traditional log formats lacking year information ("month day-of-month"). In such cases, pflogsumm assumes log entries are from the current year. For example, if the current month is April and a log contains "Apr NN" entries from the previous year, they will be interpreted as from the *current* April. As such, date-based filtering is only reliable for entries less than ~365 days old for old-/traditional-style logfiles. Arguments containing spaces must be quoted! This/last week/month arguments can take underscores, rather than spaces, to avoid quoting: E.g.: --date-range last_week ISO 8601/RFC 3339 date ranges may optionally use a hyphen or the word "to" for readability. E.g.: "2025-08-01 to 2025-08-08" If an optional day (DD) is omitted, the range becomes the full month. E.g.: 2025-08 == 2025-08-01 through 2025-08-31 "2025-07 - 2025-08" == 2025-07-01 - 2025-08-31 --debug <file> Enable debugging to <file> See Also: -x --dow0mon First day of the week is Monday, rather than Sunday. (Used only for this/last week calculations.) --deferral-detail <cnt> Limit detailed deferral reports to the top <cnt>. 0 to suppress entirely. --detail <cnt> Sets all --*-detail, -h and -u to <cnt>. Is over-ridden by individual settings. --detail 0 suppresses *all* detail. --dump-config Dump the config to STDOUT and exit. This can be used as both a debugging aid and as a way to develop your first config file. For the latter: Simply run your usual pflogsumm command line, adding --dump-config to it, and redirect STDOUT to a file. To make it cleaner: Remove unset configs: pflogsumm --dump-config <add'l args> |grep -v ' = $' --expired-detail <cnt> Limit detailed message queue time expired reports to the top <cnt>. 0 to suppress entirely. -e --extended-detail Extended (extreme? excessive?) detail Emit detailed reports. At present, this includes only a per-message report, sorted by sender domain, then user-in-domain, then by queue i.d. WARNING: the data built to generate this report can quickly consume very large amounts of memory if a lot of log entries are processed! -h <cnt> --host-cnt <cnt> top <cnt> to display in host/domain reports. 0 = none. See also: "-u" and "--*-detail" options for further report-limiting options. --help Emit short usage message and bail out. (By happy coincidence, "-h" alone does much the same, being as it requires a numeric argument :-). Yeah, I know: lame.) -i --ignore-case Handle complete email address in a case-insensitive manner. Normally pflogsumm lower-cases only the host and domain parts, leaving the user part alone. This option causes the entire email address to be lower- cased. --iso-date-time For summaries that contain date or time information, use ISO 8601 standard formats (CCYY-MM-DD and HH:MM), rather than "Mon DD CCYY" and "HHMM". -m modify (mung?) UUCP-style bang-paths This is for use when you have a mix of Internet-style domain addresses and UUCP-style bang-paths in the log. Upstream UUCP feeds sometimes mung Internet domain style address into bang-paths. This option can sometimes undo the "damage". For example: "somehost.dom!username@foo" (where "foo" is the next host upstream and "somehost.dom" was whence the email originated) will get converted to "foo!username@somehost.dom". This also affects the extended detail report (-e), to help ensure that by- domain-by-name sorting is more accurate. See also: --uucp-mung --mailq Run "mailq" command at end of report. Merely a convenience feature. (Assumes that "mailq" is in $PATH. See "$mailqCmd" variable to path thisi if desired.) --no-no-msg-size Do not emit report on "Messages with no size data". Message size is reported only by the queue manager. The message may be delivered long-enough after the (last) qmgr log entry that the information is not in the log(s) processed by a particular run of pflogsumm. This throws off "Recipients by message size" and the total for "bytes delivered." These are normally reported by pflogsumm as "Messages with no size data." --problems-first Emit "problems" reports (bounces, defers, warnings, etc.) before "normal" stats. --pscrn-detail <cnt> Limit postscreen detail reporting to top <cnt> lines of each event. 0 to suppress entirely. Note: Postscreen rejects are collected and reported in any event. --pscrn-stats Collect and emit postscreen summary stats. Note: Postscreen rejects are collected and reported in any event. --rej-add-from For those reject reports that list IP addresses or host/domain names: append the email from address to each listing. (Does not apply to "Improper use of SMTP command pipelining" report.) -q --quiet quiet - don't print headings for empty reports note: headings for warning, fatal, and "master" messages will always be printed. --rej-add-to For sender reject reports: Add the intended recipient address. --reject-detail <cnt> Limit detailed smtpd reject, warn, hold and discard reports to the top <cnt>. 0 to suppress entirely. --smtp-detail <cnt> Deprecated --smtpd-stats Generate smtpd connection statistics. The "per-day" report is not generated for single-day reports. For multiple-day reports: "per-hour" numbers are daily averages (reflected in the report heading). --smtpd-warning-detail <cnt> Deprecated. Use --warning-detail instead. Limit detailed smtpd warnings reports to the top <cnt>. 0 to suppress entirely. --srs-mung Undo SRS address munging. If your postfix install has an SRS plugin running, many addresses in the report will contain the SRS-formatted email addresses, also for non-local addresses (f.i. senders). This option will try to undo the "damage". Addresses of the form: SRS0=A6cv=PT=sender.example.com=support@srs.example.net will be reformatted to their original value: support@sender.example.com --syslog-name=name Set syslog-name to look for for Postfix log entries. By default, pflogsumm looks for entries in logfiles with a syslog name of "postfix," the default. If you've set a non-default "syslog_name" parameter in your Postfix configuration, use this option to tell pflogsumm what that is. See the discussion about the use of this option under "NOTES," below. --ssl-tls-stats Report SMTP TLS statistics and SMTPD SSL/TLS errors. -u <cnt> --user-cnt <cnt> top <cnt> to display in user reports. 0 == none. See also: "-h" and "--*-detail" options for further report-limiting options. --unprocd-file <filename> Emit unprocessed logfile lines to file <filename> --use-orig-to Where "orig_to" fields are found, report that in place of the "to" address. --uucp-mung modify (mung?) UUCP-style bang-paths See also: -m --verbose-msg-detail For the message deferral, bounce and reject summaries: display the full "reason", rather than a truncated one. Note: this can result in quite long lines in the report. --verp-mung [n] If n = 1 or is not provided, perform basic "VERP" address munging, converting sender addresses of the form "list-return-NN-someuser=some.dom@host.sender.dom" to "list-return-ID-someuser=some.dom@host.sender.dom" In other words: replace the numeric value with "ID". If n = 2, the munging is more "aggressive", converting the address to something like: "list-return@host.sender.dom" See "NOTES" regarding this option. --version Print program name and version and bail out. --warning-detail <cnt> Limit detailed warnings reports to the top <cnt>. 0 to suppress entirely. -x <file> Enable debugging to <file> See Also: --debug --zero-fill "Zero-fill" certain arrays so reports come out with data in columns that that might otherwise be blank. RETURN VALUE Pflogsumm doesn't return anything of interest to the shell. ERRORS Error messages are emitted to stderr. EXAMPLES Produce a report of previous day's activities: pflogsumm -d yesterday /var/log/maillog A report of prior week's activities: pflogsumm -d last_week /var/log/maillog.0 What's happened so far today: pflogsumm -d today /var/log/maillog Crontab entry to generate a report of the previous day's activity at 10 minutes after midnight: 10 0 * * * /usr/local/sbin/pflogsumm -d yesterday /var/log/maillog 2>&1 |/usr/bin/mailx -s "`uname -n` daily mail stats" postmaster Crontab entry to generate a report for the prior week's activity. 10 4 * * 0 /usr/local/sbin/pflogsumm -d "last week" /var/log/maillog.0 2>&1 |/usr/bin/mailx -s "`uname -n` weekly mail stats" postmaster (The two crontab examples, above, must actually be a single line each. They're broken-up into two-or-more lines due to page formatting issues.) Using a config file: pflogsumm --config /usr/local/etc/pflogusmm/daily.conf Using a config file, overriding a config file options on the command line: pflogsumm --config /usr/local/etc/pflogsumm/daily.conf --detail 30 This would override *all* detail settings in the config file, setting them all to 30. pflogsumm --config /usr/local/etc/pflogsumm/daily.conf --detail 30 --host-cnt 10 This would override all detail settings in the config file, setting them all to 30, with the global detail setting in turn being overridden to 10 for host count. SEE ALSO pffrombyto, pftobyfrom The pflogsumm FAQ: pflogsumm-faq.txt. NOTES Some options, such as date range, have both short-form and long-form names. In the interest of brevity, only the short-form options are shown in the SYNOPSIS and in pflogsumm's "help" output. Pflogsumm makes no attempt to catch/parse non-Postfix log entries. Unless it has "postfix/" in the log entry, it will be ignored. It's important that the logs are presented to pflogsumm in chronological order so that message sizes are available when needed. For display purposes: integer values are munged into "kilo" and "mega" notation as they exceed certain values. I chose the admittedly arbitrary boundaries of 512k and 512m as the points at which to do this--my thinking being 512x was the largest number (of digits) that most folks can comfortably grok at-a-glance. These are "computer" "k" and "m", not 1000 and 1,000,000. You can easily change all of this with some constants near the beginning of the program. "Items-per-day" reports are not generated for single-day reports. For multiple-day reports: "Items-per-hour" numbers are daily averages (reflected in the report headings). Message rejects, reject warnings, holds and discards are all reported under the "rejects" column for the Per-Hour and Per-Day traffic summaries. Verp munging may not always result in correct address and address-count reduction. Verp munging is always in a state of experimentation. The use of this option may result in inaccurate statistics with regards to the "senders" count. UUCP-style bang-path handling needs more work. Particularly if Postfix is not being run with "swap_bangpath = yes" and/or *is* being run with "append_dot_mydomain = yes", the detailed by-message report may not be sorted correctly by-domain-by-user. (Also depends on upstream MTA, I suspect.) The "percent rejected" and "percent discarded" figures are only approximations. They are calculated as follows (example is for "percent rejected"): percent rejected = (rejected / (delivered + rejected + discarded)) * 100 There are some issues with the use of --syslog-name. The problem is that, even with Postfix' $syslog_name set, it will sometimes still log things with "postfix" as the syslog_name. This is noted in /etc/postfix/sample-misc.cf: # Beware: a non-default syslog_name setting takes effect only # after process initialization. Some initialization errors will be # logged with the default name, especially errors while parsing # the command line and errors while accessing the Postfix main.cf # configuration file. As a consequence, pflogsumm must always look for "postfix," in logs, as well as whatever is supplied for syslog_name. Where this becomes an issue is where people are running two or more instances of Postfix, logging to the same file. In such a case: . Neither instance may use the default "postfix" syslog name and... . Log entries that fall victim to what's described in sample-misc.cf will be reported under "postfix", so that if you're running pflogsumm twice, once for each syslog_name, such log entries will show up in each report. The Pflogsumm Home Page is at: http://jimsun.LinxNet.com/postfix_contrib.html REQUIREMENTS Requires Perl 5.10, minimum, and Date::Calc For --config, Pflogsumm requires the Config::Simple module. Both of the above can be obtained from CPAN at http://www.perl.com or from your distro's repository. Pflogsumm is currently written and tested under Perl 5.38. As of version 19990413-02, pflogsumm worked with Perl 5.003, but future compatibility is not guaranteed. LICENSE This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You may have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. An on-line copy of the GNU General Public License can be found http://www.fsf.org/copyleft/gpl.html. 1.2.1 2026-04-22 PFLOGSUMM(1)
NAME | SYNOPSIS pflogsumm [--config <file>] [--bounce-detail <cnt>] [--colwidth <n>] | DESCRIPTION | OPTIONS | RETURN VALUE | ERRORS | EXAMPLES | SEE ALSO | NOTES | REQUIREMENTS | LICENSE
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