[H-GEN] Anti-spam tool wanted

[Tony Nugent]

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On Thu May 01 2003 at 13:58, Greg Black wrote:

> What I want is a tool that can sit on my SMTP port, check for a
> MAIL FROM SMTP command that claims to be from yahoo.com, check
> the IP to see if it's a yahoo server, and then issue an immediate
> 553 error if it's not a real yahoo host.  If it's not claiming
> to be from yahoo, or if it's a possible real yahoo message, it
> should then hand over the connection to the real MTA for further
> processing.
> 
> If anybody can point me to something that does this, I'd be
> grateful.  I'm not interested in rules for a particular MTA that
> would cause it to do this, as this situation involves several
> MTAs and all of them are different -- I need a tool that handles
> this before the MTA gets its hands on the connection.

Have you had a look at MIMEDefang?  It is a milter (mail filter)
plug-in for sendmail...

	http://www.roaringpenguin.com/mimedefang
and
	http://www.mimedefang.org/

It it is a brilliant piece of software, and its use of perl allows
you to build poweful and highly customised filtering to any sendmail
server.  Tools like File::Scan, spamassassin and razor work very
nicely with it.  I've been using it for over two years with great
success.

> Greg

Cheers
Tony

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