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SASLについて調べる:
RFC2222
http://www.ipa.go.jp/security/rfc/RFC2222JA.html
Postfix SASL Howto
http://www.kobitosan.net/postfix/trans-2.1/jhtml/SASL_README.html
Java SASL API
http://java.sun.com/j2se/1.5.0/ja/docs/ja/guide/security/sasl/sasl-refguide.html
Kerberos
http://www.tanu.org/~sakane/doc/public/howto-kerberos.html
SMTP(Simple Mail Transfer Protocol)〜後編http://www.atmarkit.co.jp/fnetwork/rensai/netpro06/netpro01.html
日本語RFCリスト
http://www.se.hiroshima-u.ac.jp/~isaki/rfc/list.html