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o ¼õ¿®³Îǧ (Disposition-Notification-To:)
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o Namazu ¤È¤ÎÏ¢·È¤Ë¤è¤ëÁ´Ê¸¸¡º÷
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. PGP/GPGÂбþ
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* SSLÂбþ
* LDAPÂбþ
* ¥á¥Ã¥»¡¼¥¸¤ÎÁ´Ê¸¸¡º÷ (¥Ù¥¿)
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