メールの動作
-----------------------------------------------------------------------
SMTP動作例
-----------------------------------------------------------------------
TCP SYN, [1085] -> [25]
TCP SYN ACK, [25] -> [1085]
TCP ACK, [1085] -> [25]
TCP PSH ACK, [25] -> [1085]
SMTP Section: 124 bytes
Reply: 220
Message: ESMTP wrench.cpqtnet.co.jp Sendmail 980427.SGI.8.8.8/970903.SGI.AUTOCF ready at Mon, 25 Jun 2001 10:52:27 +0900 (JST)
TCP PSH ACK, [1085] -> [25] クライアントの指定
SMTP Section: 16 bytes
Command: HELO
Message: tsuenaga1
TCP PSH ACK, [25] -> [1085]
SMTP Section: 75 bytes
Reply: 250
Message: wrench.cpqtnet.co.jp Hello tsuenag [172.20.5.10], pleased to meet you
TCP PSH ACK, [1085] -> [25] 送り元の指定
SMTP Section: 33 bytes
Command: MAIL
Message: FROM: tomo-sue@yahoo.com
TCP PSH ACK, [25] -> [1085]
SMTP Section: 39 bytes
Reply: 250
Message: ... Sender ok
TCP PSH ACK, [1085] -> [25] 送り先の指定
SMTP Section: 38 bytes
Command: RCPT
Message: TO: tomo@wrench.cpqtnet.co.jp
TCP PSH ACK, [25] -> [1085]
SMTP Section: 49 bytes
Reply: 250
Message: ... Recipient ok
TCP PSH ACK, [1085] -> [25] データコマンド
SMTP Section: 6 bytes
Command: DATA
TCP PSH ACK, [25] -> [1085]
SMTP Section: 50 bytes
Reply: 354
Message: Enter mail, end with "." on a line by itself
TCP PSH ACK, [1085] -> [25] データの書き込み
SMTP Section: 1295 bytes
Message-ID: <005c01c0fd1c$3cf78560$0a0514ac@asiapacific.cpqcorp.net>
From: "tomo"
To:
Subject: =?iso-2022-jp?B?GyRCS1xIVhsoQg==?=
Date: Mon, 25 Jun 2001 11:12:08 +0900
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----=_NextPart_000_0058_01C0FD67.ACB1DBD0"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
SMTP Data
0000 0D 0A 54 68 69 73 20 69 73 20 61 20 6D 75 6C 74 ..This is a mult
TCP PSH ACK, [25] -> [1085]
SMTP Section: 44 bytes
Reply: 250
Message: KAA00943 Message accepted for delivery
TCP PSH ACK, [1085] -> [25] SMTPセッションの終了
SMTP Section: 6 bytes
Command: QUIT
TCP PSH ACK, [25] -> [1085]
SMTP Section: 45 bytes
Reply: 221
Message: wrench.cpqtnet.co.jp closing connection
TCP FIN ACK, [1085] -> [25]
TCP FIN ACK, [25] -> [1085]
-----------------------------------------------------------------------
POP3動作例
-----------------------------------------------------------------------
TCP SYN, [1088] -> [110]
TCP SYN ACK, [110] -> [1088]
TCP ACK, [1088] -> [110]
TCP PSH ACK, [110] -> [1088]
POP3 Section; 46 bytes
Reply: +OK POP3 [210.237.175.90] v7.64 server ready
TCP PSH ACK, [1088] -> [110]
POP3 Section; 11 bytes
Command: USER tomo; Submit username
TCP PSH ACK, [110] -> [1088]
POP3 Section; 41 bytes
Reply: +OK User name accepted, password please
TCP PSH ACK, [1088] -> [110]
POP3 Section; 17 bytes
Command: PASS xxxx; Submit username
TCP PSH ACK, [110] -> [1088]
POP3 Section; 30 bytes
Reply: +OK Mailbox open, 2 messages