[Logcheck-devel] Bug#437882: logcheck-database: violations.ignore rule for postfix's ETRN warnings

[Frédéric Brière]

Package: logcheck-database
Version: 1.2.54
Severity: wishlist

Every once in a while, someone will connect to my Postfix server and
issue an ETRN for a foreign domain.  By default, Postfix only allows
ETRNs for $relay_domains, and will thus reject the request, issuing a
warnings that gets picked up as a security violation.

Here's a rule that filters these out:

  ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ postfix/smtpd\[[0-9]+\]: warning: reject: ETRN [._[:alnum:]-]+\.\.\. from [._[:alnum:]-]+\[[0-9.]{7,15}\]$


(Yes, the "..." would get picked up by the char class before it, but I
prefered spelling it out.)


-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 2.6.21-2-k7 (SMP w/1 CPU core)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash