Technoids.org
SPAM/E-mail Filtering with Sendmail, Procmail, MILTERs, ...
Greylisting
Installing milter-greylist from FreeBSD Ports
(Weldon Whipple
Greylisting.org
The Next Step in the Spam Control War: Greylisting
(Evan Harris)
Procmail, SpamAssassin ...
Procmail Quick Start: An Introduction to Mail Filtering with a Focus on Procmail
(Nancy McGough)
Procmail Tips (pm-doc.sourceforge.net/pm-tips.html)
A Guide to Writing your own Add-On Rules for SpamAssassin
(Dave Taylor)
How to Filter
All
Incoming (and/or Outgoing) Mail with Procmail
(Weldon Whipple)
Blacklisting
DNSBL: Configuring Sendmail for DNS-Based Blacklisting
Blacklists Compared
(Jeff Makey)
MILTERs
sendmail.org
MILTER documents
Filtering Mail with Sendmail
(sendmail.org)
libmilter README
(sendmail.org)
Installing clamav-milter from FreeBSD Ports
Notes on Installing MIMEDefang from the FreeBSD Ports Collection
(Weldon Whipple)
Installing milter-greylist from FreeBSD Ports
(Weldon Whipple
Installing the DomainKeys Milter
(Weldon Whipple)
Installing the SenderID Milter
(Weldon Whipple)
MTA Authorization Records in DNS (MARID)
Selected MARID-Related Terms and Acronyms
SPF: Sender Policy Framework
Sender Policy Framework (SPF) for Authorizing Use of Domains in E-MAIL, version 1 (draft-schlitt-spf-classic-01)
SPF mailing list archives
Installing the SenderID Milter
Return Path Rewriting (RPR)--Mail Forwarding in the Spam Age
(Daniel Roethlisberger)
Yahoo:
Domain-based Email Authentication Using Public-Keys Advertised in the DNS (DomainKeys)
Laws and Regulations
CAN-SPAM Act of 2003
FTC: Label for Email Messages Containing Sexually Oriented Material: Final Rule
Other
Help! My Mail Server is Being DoSsed!
Spam Haters and Spam Friends: Per User Spam Control with access.db (Sort of)
POSIX Threads Programming
(Lawrence Livermore National Laboratory)