---
name: "postfix2dlf_pre"
section: "1"
platform: "linux"
package: "lire"
version: "2.1.1-8"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/postfix2dlf_pre"
---

# postfix2dlf\_pre(1)

preprocess postfix logfiles for postfix2dlf\_main

## NAME

postfix2dlf\_pre - preprocess postfix logfiles for postfix2dlf\_main

## SYNOPSIS

**postfix2dlf\_pre** *dumpfile*

## DESCRIPTION

**postfix2dlf\_pre** expect a postfix logfile on STDIN.  It prints preprocessed logfile lines to STDOUT and creates a Berkeley DB holding a mapping from hostname-queueid to number-of-lines-with-this-id.  *dumpfile* can be e.g. /tmp/dump, ../../var/dump or dump.

## DEVELOPERS

One can use the lr\_anondump tool to view the contents of the dumpfile.

E.g. run

```
 $ zcat postfix.log.gz | ./postfix2dlf_pre /tmp/stem > /tmp/pre
 $ lr_anondump /tmp/stem
 $ ./postfix2dlf_main /tmp/stem < /tmp/pre > /tmp/post
```

.

## EXAMPLE

The raw log file

```
 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 04:02:58 internetsrv postfix/local[20924]: 693A3578E:
  to=<john.doe.2@example.com>, relay=local, delay=3, status=sent
  (forwarded as E325C578D)
```

will get converted to

```
 dlfid internetsrv693A3578E from_relay_host localhost from_relay_ip
  127.0.0.1 logrelay internetsrv queueid 693A3578E time 1007175776
  type pickup
 dlfid internetsrv693A3578E logrelay internetsrv msgid
  <john.doe.1@example.com> queueid 693A3578E time 1007175776 type cleanup
 dlfid internetsrv693A3578E from_domain example.com from_relay_host
  localhost from_relay_ip 127.0.0.1 from_user john.doe.2 logrelay
  internetsrv queueid 693A3578E size 617 time 1007175777 type qmgr
 delay 3 dlfid internetsrv693A3578E logrelay internetsrv queueid
  693A3578E stat sent time 1007175778 to_domain example.com
  to_relay_host localhost to_relay_ip 127.0.0.1 to_user john.doe.2
  type local xstat (forwarded_as_e325c578d)
```

## EXAMPLES

postfix2dlf\_pre will be rarely used on its own: it is called by [**postfix2dlf**(1)](/postfix2dlf/1.md). Refer to the postfix2dlf manpage for examples and usage information.

## SEE ALSO

[**postfix2dlf**(1)](/postfix2dlf/1.md), [**postfix2dlf\_main**(1)](/postfix2dlf_main/1.md), [**sendmail2dlf**(1)](/sendmail2dlf/1.md), [**qmail2dlf**(1)](/qmail2dlf/1.md), [**exim2dlf**(1)](/exim2dlf/1.md)

## VERSION

`$Id:` postfix2dlf\_pre.in,v 1.13 2006/07/23 13:16:34 vanbaal Exp $

## COPYRIGHT

Copyright (C) 2002 Stichting LogReport Foundation LogReport@LogReport.org

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 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