Summary
使えないサイトもアリhttp://www.rbl.jp/svcheck.php
http://www.abuse.net/relay.html
http://www.paladincorp.com.au/unix/spam/spamlart/
http://www.nanet.co.jp/rlytest/relaytest.html
telnet relay-test.mail-abuse.org
- Reference
kobitosan.net - postfix - Anti Spam on Postfix
http://www.kobitosan.net/postfix/antispam.html