spamassassin-users October 2010 archive
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spamassassin-users: Re: Full circle DNS test?

Re: Full circle DNS test?

From: RW <rwmaillists_at_nospam>
Date: Sat Oct 30 2010 - 07:32:35 GMT
To: users@spamassassin.apache.org

On Fri, 29 Oct 2010 22:02:56 -0400
Darxus@ChaosReigns.com wrote:

> I see there's a RDNS_NONE rule for when the sending IP address has no
> DNS PTR (reverse DNS) record. But no rule for when that PTR record
> doesn't have a matching A (forward DNS) record that matches the
> sending IP?

There's one in the optional Botnet plugin, there are a couple of
problems with it though. Its rdns lookups aren't very efficient, and
it doesn't work for IPv6.