Arrogant RBL list maintainers

William Herrin herrin-nanog at dirtside.com
Wed Dec 9 10:57:29 CST 2009


On Wed, Dec 9, 2009 at 10:18 AM, Sven Olaf Kamphuis
<sven at cyberbunker.com> wrote:
> We've noticed that Trend Micro "mail-abuse.com" just "assumes" ips are
> dynamic by default,
>
> because they just assume that working, rfc compliant, reverse dns that
> just-so-happens to be automatically generated would indicate dynamic ip
> space.

Sven,

Which is it? By default or because it looks automatically generated?

By default would seem to be a problem. Automatically generated, not so much.

If you haven't made the effort to set up and secure a mail server then
you shouldn't be talking smtp to the hosts mail-abuse.com is used to
protect. If you haven't bothered to set the reverse DNS to match your
server's name then you haven't made the effort, at least not with a
modicum of competence.

Regards,
Bill Herrin

-- 
William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004




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