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Identifying Phoney Email Addresses

2003-07-15 08:55:00
Am running Procmail v3.22 on FBSD-4.8 with SpamAssassin-2.55 and
Sendmail-8.12.8p.

I've seen procmail recipes on identifying suspicious sender emails using
all numbers, but mamny if not most of those now have a mixture of
alpha/numeric user names, like these two in a row:

ygciw651nk(_at_)hotmail(_dot_)com
czlpxgyf1(_at_)yahoo(_dot_)com

I would appreciate help on a procmail recipe that would identify the above
type of sender (From), but only if they exceed 6 digits. The 5-6 digits
with a mixture of alpha/numeric are probably okay since many of our emails
come from radio operators with their unique FCC callsigns which are
typically 5-6 digits.

Thanks for any tips....

Best regards,
Jack L. Stone,
Administrator

Sage American
http://www.sage-american.com
jacks(_at_)sage-american(_dot_)com

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