At 00:29 2004-05-30 -0400, Don Hammond wrote:
Email address in From: header is valid * but only for a couple of days *
This is my reluctant response to spammers' unrelenting address harvesting
I posted about an avoidance technique in my procmail blog a week or two ago
(to which I posted a pointer to here on the procmail list). You might want
to review that - the problem with changing the LHS of your address is that
your mail server will be bombarded with progressively MORE spam as the old
addresses make their way into more databases. Using a different HOST on
the RHS however allows you to abandon that interrim host and *SHED* the MX
contacts.
deh(_at_)may2004(_dot_)tradersdata(_dot_)com
Would work sufficient to ensure that HUMANS could make an educated guess as
to how to contact you in two days (though reasonably, you wouldn't nix that
host entry in DNS until a week or two into June, or hell, even the END of
June).
As your method clearly relies upon PLUSSED addresses, unless you have an
entry for each "retired" plussed address in your virtusertable or similar
MTA facility, your server continues to ACCEPT the traffic and deliver it
into your mailbox (and even if each retired address is listed, that's both
a lot of management work as well as continuing MX hits, even if you decline
them during the SMTP stage).
---
Sean B. Straw / Professional Software Engineering
Procmail disclaimer: <http://www.professional.org/procmail/disclaimer.html>
Please DO NOT carbon me on list replies. I'll get my copy from the list.
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