check for regexp patterns in reverse dns

GoogleCodeExporter commented 8 years ago

This is an RFE for the addition of a new check to perform a dns lookup on
the client_ip and obtain the reverse dns value and then match this value
against multiple regular expressions to determine if the message should be
greylisted.

The idea is that the reverse dns of the client_ip may indicate that the
sending host is not a normal mail server.  e.g. it contains 'dhcp' or 'pool'

It should be considered that this could be used as a blacklist of sorts,
and what will happen if an administrator adds an excessive number of
regular expressions.

Original issue reported on code.google.com by jesserth...@gmail.com on 10 Aug 2007 at 5:21

GoogleCodeExporter commented 8 years ago

Original comment by eino.tuominen@gmail.com on 7 Apr 2008 at 4:45

Changed state: Accepted

GoogleCodeExporter commented 8 years ago

And please support PCRE, noone really wants to use the basic system one.

Original comment by h...@hege.li on 17 May 2008 at 6:47

j4w3d / gross

check for regexp patterns in reverse dns #49