postfix2dlf.in(1)

NAME

postfix2dlf - convert postfix logfiles to dlf format

SYNOPSIS

postfix2dlf

DESCRIPTION

postfix2dlf converts a postfix logfile to a Lire email Distilled Log
Format file. It calls postfix2dlf_pre(1) and postfix2dlf_main(1) to do the real job. It expects the logfile on stdin, and prints the DLF to
stdout. Diagnostics are printed to stderr. This script is called by
lr_log2xml(1).

RATIONALE

The postfix2dlf architecture is quite different from other email dlf
convertors. This is because when parsing a postfix logfile, there is
no sign indicating wether a message has been delivered to all
addressees. (In a sendmail log, there is a rcpts= field, which can be used for this purpose.)

There are several workarounds to deal with such a log. 1: keep track
of all queueid's along with their from- info during the entire logfile processing. This is too memory hungry. 2: do some 10-seconds
heuristic: assume a message will never be longer in the queue than e.g. 10 seconds. Or, alternatively, assume no more than
$LR_POSTFIX_MAX_QUEUE_SIZE messages will be in the queue concurrently. This is too errorprone. 3: Use sort(1) to sort the loglines on queueid. This is what we used to do. However, we don't know
beforehand which field will store the queueid (logfiles processed by
Sun Solaris syslog will have their queueid on another position, e.g.)
Calculating this position would mean parsing the log twice.

We've choosen a variation of the third alternative: we store the
information which we would've gotten by sort(1) in a db file. While building this db file, , which holds a map from queueids to nof-lineswith-this-id, we do as much preprocessing as we can. The preprocessed log is printed to a tmpfile. The structure of the preprocessed log is the same as the raw log: one raw logline gives one preprocessed line.
The preprocessed log is converted to dlf by lr_postfix2dlf_main(1), using the information in the db file.

A nice sideeffect of this way of processing is: the log is processed in the original time-sorted order.

EXAMPLE

A logfile: Dec 1 04:02:56 internetsrv postfix/pickup[20919]:
693A3578E: uid=0 from=<root>; Dec 1 04:02:56 internetsrv postfix/cleanup[20921]:
693A3578E: message-id=<john.doe.1@example.com>; Dec 1 04:02:57 internetsrv postfix/qmgr[20164]: 693A3578E:
from=<john.doe.2@example.com>, size=617 (queue active); Dec 1 04:02:57 internetsrv postfix/cleanup[20921]:
E325C578D: message-id=<john.doe.1@example.com>; Dec 1 04:02:58 internetsrv postfix/local[20924]:
693A3578E: to=<john.doe.2@example.com>, relay=local,
delay=3, status=sent (forwarded as E325C578D); Dec 1 04:02:58 internetsrv postfix/qmgr[20164]: E325C578D:
from=<john.doe.2@example.com>, size=769 (queue active); Dec 1 04:02:59 internetsrv postfix/smtp[20925]: E325C578D:
to=<john.doe.3@example.com>,
relay=1.example.com.vp.pt[10.0.0.1], delay=2, status=sent
(250 Requested mail action Ok.); Dec 1 06:58:22 internetsrv postfix/smtpd[21142]: connect
from 2.example.com.fi[10.0.0.2]; Dec 1 06:58:23 internetsrv postfix/smtpd[21142]:
42BFE578D: client=2.example.com.fi[10.0.0.2]; Dec 1 06:58:24 internetsrv postfix/cleanup[21143]:
42BFE578D: message-id=<john.doe.4@example.com>; Dec 1 06:58:24 internetsrv postfix/qmgr[20164]: 42BFE578D:
from=<john.doe.5@example.com>, size=2473 (queue active); Dec 1 06:58:26 internetsrv postfix/smtp[21145]: 42BFE578D:
to=<john.doe.6@example.com>,
relay=1.example.com.vp.pt[10.0.0.1], delay=3, status=sent
(250 Requested mail action Ok.); Dec 1 06:59:22 internetsrv postfix/smtpd[21142]:
disconnect from 2.example.com.fi[10.0.0.2]; Dec 1 07:08:28 internetsrv postfix/smtpd[21160]: connect
from 2.example.com.fi[10.0.0.2]; Dec 1 07:08:28 internetsrv postfix/smtpd[21160]:
C7B39578D: client=2.example.com.fi[10.0.0.2]; Dec 1 07:08:29 internetsrv postfix/cleanup[21161]:
C7B39578D: message-id=<john.doe.7@example.com>; Dec 1 07:08:29 internetsrv postfix/qmgr[20164]: C7B39578D:
from=<john.doe.8@example.com>, size=2173 (queue active); Dec 1 07:08:32 internetsrv postfix/smtp[21163]: C7B39578D:
to=<john.doe.9@example.com>,
relay=3.example.com.vp.pt[10.0.0.3], delay=4, status=sent
(250 Requested mail action Ok.); Dec 1 07:08:33 internetsrv postfix/smtpd[21160]:
disconnect from 2.example.com.fi[10.0.0.2]; Dec 1 07:18:42 internetsrv postfix/smtpd[21166]: connect
from 2.example.com.fi[10.0.0.2]; will get converted to

1007175776 internetsrv 693A3578E <john.doe.1@example.com>
john.doe.2 example.com localhost 127.0.0.1 617 3 0
john.doe.2 example.com localhost 127.0.0.1 sent
(forwarded_as_e325c578d)

1007175779 internetsrv E325C578D <john.doe.1@example.com>

john.doe.2 example.com localhost 127.0.0.1 769 2 0
john.doe.3 example.com 1.example.com.vp.pt 10.0.0.1 sent
(250_requested_mail_action_ok.)

1007186303 internetsrv 42BFE578D <john.doe.4@example.com>

john.doe.5 example.com 2.example.com.fi 10.0.0.2 2473 3 0
john.doe.6 example.com 1.example.com.vp.pt 10.0.0.1 sent
(250_requested_mail_action_ok.)

1007186908 internetsrv C7B39578D <john.doe.7@example.com>

john.doe.8 example.com 2.example.com.fi 10.0.0.2 2173 4 0
john.doe.9 example.com 3.example.com.vp.pt 10.0.0.3 sent
(250_requested_mail_action_ok.)

postfix2dlf will be rarely used on its own, but is more likely called
by lr_log2report:

$ lr_log2report postfix < /var/log/mail.log > report

. If you'd really like to run this script standalone (e.g. for
debugging) run it as

$ LR_SERVICE=email LR_ID=`date +%s` /path/to/lire/convertors/postfix2dlf < /var/log/mail.log > mail.dlf

. Be sure to have /path/to/libexec/lire and /path/to/lire/convertors
in your PATH, and be sure to have TMPDIR, LR_DBFILE and LR_DBDIR set.
You could manually source /path/to/etc/lire/profile_lean and
/path/to/etc/lire/defaults to achieve this.

LOGFORMAT

Postfix logs look like this:
from local to remote: postfix/pickup[81586]: 094BE204: uid=1001 from=<edwin>
postfix/cleanup[81683]: 094BE204:
message-id=<20000531080729.L39824@cgmd76206.c.nl>; postfix/qmgr[13460]: 094BE204:
from=<edwin@cgmd76206.c.nl>, size=1717 (queue active); postfix/smtp[81685]: 094BE204: to=<r.moeskops@c.nl>,
relay=smtp.c.nl[212.83.68.146], delay=4, status=sent (250
Message received:
20000531060722.ZCOV13476.relay02@cgmd76206.c.nl)
from local to local: postfix/pickup[81849]: 473B9204: uid=1001 from=<edwin>
postfix/cleanup[81916]: 473B9204:
message-id=<200005310901.LAA56567@kludge.mpn.cp.p.com>; postfix/qmgr[13460]: 473B9204:
from=<edwin@cgmd76206.c.nl>, size=1997 (queue active); postfix/local[81918]: 473B9204: to=<edwin@cgmd76206.c.nl>,
relay=local, delay=0, status=sent
("|exec /usr/local/bin/procmail -t")
from remote to local: postfix/smtpd[82056]: A17131C5:
client=gw-nl1.o-it.com[193.79.128.34]; postfix/cleanup[82057]: A17131C5:
message-id=<023201bfcad1$16365ba0$775910ac@ehvbos.nl.oit.com>; postfix/qmgr[13460]: A17131C5:
from=<Jan.Stap@nl.o-it.com>, size=1692 (queue active); postfix/local[82059]: A17131C5:
to=<majordomo-org@cgmd76206.c.nl>, relay=local, delay=1,
status=sent ("|/usr/local/majordomo/wrapper majordomo")
from remote to remote: postfix/smtpd[58567]: connect from
kweetal.t.nl[131.155.2.7]; postfix/smtpd[58567]: 9A16E229:
client=kweetal.t.nl[131.155.2.7]; postfix/cleanup[58570]: 9A16E229:
message-id=<200006041246.OAA23888@bw2.baub.bwk.t.nl>; postfix/qmgr[236]: 9A16E229:
from=<edwin@bw2.baub.bwk.t.nl>, size=774 (queue active); postfix/smtpd[58567]: disconnect from
kweetal.t.nl[131.155.2.7]; postfix/smtp[58574]: 9A16E229: to=<joostvb@x.nl>,
relay=mx3.x.nl[194.109.6.48], delay=15, status=sent (250
OAA23290 Message accepted for delivery)

PERFORMANCE

We ran the postfix2dlf suite on a 24MB postfix logfile. Results were:: postfix2dlf_pre info read 195257 lines; output 177027 DLF lines; 3 errors postfix2dlf_pre info memory stats: vsize=5900K rss=4508K majflt=430
postfix2dlf_pre info elapsed time in seconds real=626 user=449.16 system=8.7; postfix2dlf_main info read 177027 lines; output 61671 DLF lines; 0 errors postfix2dlf_main info memory stats: vsize=5976K rss=4656K majflt=427
postfix2dlf_main info elapsed time in seconds real=245 user=152.05 system=4.15
.

EXAMPLES

postfix2dlf will be rarely used on its own, but is more likely called by lr_log2report:: $ lr_run lr_log2report postfix < /var/log/maillog

BUGS

This script needs a lot of space in TMPDIR: it creates a tmpfile which is about the same in size as the raw log it's being fed.

Occasionally, postfix reuses its queueids very fast. We can't cope
with this.

THANKS

Brad Knowles, for supplying patches. Emanuele "luca" for pointing out the lmtp delivery.

VERSION

$Id: postfix2dlf.in,v 1.40 2006/07/23 13:16:34 vanbaal Exp $

COPYRIGHT

This program is part of Lire.

Lire 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 should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with
http://www.gnu.org/copyleft/gpl.html.

AUTHOR

Joost van Baal, embrionic version by Edwin Groothuis.

docs.sk

comprehensive documentation repository

See also