[Mimedefang] Need advise on how to proceed.

[-ray]

On Fri, 11 Jun 2004, David F. Skoll wrote:

> You **MUST** configure your mail network to reject invalid recipients
> with a 5xx code at the MX server.  The good old days of having a gateway
> machine that lacks knowledge of valid internal addresses are gone; such
> an architecture is unsustainable in today's hostile environment.

Back in the day, you wouldn't return a 5xx code on invalid recipients
since that would make it very easy for spammers to build a "good" and a
"bad" email list.  Thus making their operations much more efficient at the
cost of bandwidth and CPU cycles on our mail server.  Is this no longer a
good thing to do?

ray
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Ray DeJean  				       	 http://www.r-a-y.org
Systems Engineer                    Southeastern Louisiana University
IBM Certified Specialist  	      AIX Administration, AIX Support
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