David A. Windham thumbnail

.. no I can’t stop your spam revisited.

* Spam (R) (capitalized) is a registered trademark of a meat
product made by Hormel. Use of the term spam (uncapitalized) in
the Internet community comes from a Monty Python sketch and is
almost Internet folklore. The term spam is usually pejorative,
however this is not in any way intended to describe the Hormel
product.
the more I talk computers, the more I hear spam.. client after client..
and this is the primary reason I don’t run any client emails through our servers.
They are better served by an ISP or hosting provider with 24/7 support and I don’t have to deal with the security risk associated with qmail.
I began recieving some strange notices from one of my servers last week and after a good look at the server, we discovered some issues with security, qmail, and smtp..
so here’s my quick advice and some further reading material.. …. most spam originates from a small number of outfits, and ever since the
Cam Spam act of 2003
gave some bite to laws against unsolicited email, most of these outfits try to conceal thier identities by relaying, using small ISP’s etc..
this is what I say, if you maintain a server or an entire network, you should feel obligated to make sure that it is secure for the benefit of everyone. And my advice to anyone who recieves spam. Report it here and don’t publish an email address unless absolutely nessesary…
SPF for Qmail
Sender Policy Framework
SPF Introduction
Qmail
eSMTP
SMTP
SMTP Introduction
SMTP detailed
Anti-Spam Recommendations for SMTP MTAs
IMAP
POP (post office protocol)
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