[Mimedefang] Re: Great open letter about anti-virus, emails, bounces, etc.

[Michael Sims]

mimedefang-admin at lists.roaringpenguin.com wrote:
> We maintain an extensive "mini-DUL" with reverses for IPs that are
> known to be dynamically allocated in our sendmail access file.
>
> We've had good luck with kicking back a 550 that simply says "Mailing
> directly from dynamics refused; please use your provider's outgoing
> mail server to relay."

Sounds like a good idea.  Do you do this based off a substring of the PTR
record, or are you maintaining a list of IP networks?

___________________________________________
Michael Sims
Project Analyst - Information Technology
Crye-Leike Realtors
Office: (901)758-5648  Pager: (901)769-3722
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