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-lines-with-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.
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)
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.
SEE ALSO¶
postfix2dlf_main(1),
postfix2dlf_pre(1) and the other email dlf
convertors:
argomail2dlf(1),
exim2dlf(1),
nms2dlf(1),
qmail2dlf(1),
sendmail2dlf(1); the caller
lr_log2xml(1).
VERSION¶
$Id: postfix2dlf.in,v 1.40 2006/07/23 13:16:34 vanbaal Exp $
COPYRIGHT¶
Copyright (C) 2000, 2001, 2002 Stichting LogReport Foundation
LogReport@LogReport.org
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.