[Dovecot] anti-spam+anti-malware suggestions

[Stan Hoeppner]

Dmitri V. Ivanov put forth on 10/22/2010 11:01 AM:
> On Fri, Oct 22, 2010 at 05:58:46AM -0500, Stan Hoeppner wrote:
>> It was donated to me, and by default the community, by an anonymous
>> poster to the spam-l mailing list, quite some time ago.  We were having
>> a discussion about blocking dynamic/generic rDNS hosts.  Many of us were
>> using really coarse regexes that others felt would catch alot of ham
>> sources instead of just broadband/dynamic bots.
> 
> Some of my friends prefer way to put dynamic hosts (and hosts which don't
> provide real domainname/IP literal with HELO/EHLO) into graylisting. This 
> way gives some failover to mistakes within list of dynamic hosts and there
> is no conflict with large mail systems which sends outbond mail from 
> different hosts (they moustly have reverse DNS records not matching lists).
> 
> Sorry for offtopic.

I think most of us that use something like this pcre also use
greylisting.  I use super selective Postgrey, well after all other
checks, as a safety net of sorts.

-- 
Stan