[Greylist-users] Which greylist system for fastest & easiest installation?

[Mark Pecaut]

On Thu, Apr 21, 2005 at 05:10:24PM -0500, Graham Toal wrote:
> So, two questions: do any commercial spam filters offer
> greylisting as well? (eg Brightmail, that kind of appliance)
> 
> and assuming the answer is no, what is the best way to bring up
> a reliable greylist that won't require lots of manual tweaking
> and will 'just work' reliably (and reasonably unattended)?

I'm using the greylisting built into OpenBSD's spamd.  
Everything you need comes in the default install.  No external
databases to install or any of that.  It even has support for 
greytrapping (stuttering to IPs that attempt to send mail to 
your spamtrap addresses).  It is very resource-light.

Because of the way it works you do not have to do any mail
queueing or forwarding on the OpenBSD machine - it can 
perform greylisting for your real smtp servers if you want.
It is completely MTA independant.

http://www.openbsd.org/cgi-bin/man.cgi?query=spamd&manpath=OpenBSD+3.7

If you do decide to go this route, you might consider buying
one of the 3.7 CDs that are coming out mid-May.  These will
have support for greylisting and a few bug fixes, too.

-Mark