[Mimedefang] Re: Great open letter about anti-virus, emails, bounces, etc.
Michael Sims
michaels at crye-leike.com
Mon Sep 15 16:13:00 EDT 2003
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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