http://www.ftserve.net/~fuji/linux/popbeforesmtp.shtml

http://www.namazu.org/~satoru/mobileimap/

http://www.kobitosan.net/postfix/jhtml/basic.html

http://www.paken.org:8080/linux/linux-tips/postfix.html http://www.matsusaka-u.ac.jp/~okumura/networking/beforesmtp.html http://www.kuee.kyoto-u.ac.jp/~kitano/popauth/index.html http://www.apm.dnsalias.net/linux2.4/chap4.html http://yaguma…

http://ucchi.avis.ad.jp/docs/popbeforesmtp.html POP before SMTPってのはどうも泥臭いよなぁ。（qmail+tcpserver編もアリ）

http://ordb.org/

http://www.informatik.uni-kiel.de/%7Eca/email/check.html

http://www.nanet.co.jp/rlytest/index.html

http://spam.h1r.org/blacklists.html