Mail

http://www.brandonhutchinson.com/Creating_a_new_sendmail_mailer.html defining new sendmail ‘mailer’ with custom limits to create per-domain limit policy

http://www.vamsoft.com/spfcheck.asp spf verification that works!!! (as opposed to http://www.openspf.org/Why?)

http://people.ucsc.edu/~jrudd/spamassassin/ SpamAssassin-Botnet – plugin for SA that checks if a msg was sent by a botnet node

http://www.columbia.edu/acis/email/cyrus/ sort of “case study” for PHB-types

http://sergeysl.pnz.ru/freebsd/mailsystem.php article in russian how to combine postfix /clamav/spamassassin in one manageable setup

http://taint.org/x/2007/maawg/maawg-dublin-june2007.pdf Notes on Scaling SA 3.2.1