telnet - SMTP - Knowlege Database

telnetによるSMTP疎通試験方法†

$ telnet [接続先] 25
Trying [接続先IP] ...
Connected to [接続先] ([接続先IP]).
Escape character is '^]'.
220 [SMTPサーバ名] ESMTP
HELO [送信元ドメイン]
250 [SMTPサーバ名]
MAIL FROM:[送信元アドレス]
250 ok
RCPT TO:[送信先アドレス]
250 ok
DATA
354 go ahead
[本文記入]
.(本文の終了はピリオド)
250 ok 1207706943 qp 19091
quit
221 [SMTPサーバ名]
Connection closed by foreign host.

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参考†

http://tooljp.com/qa/413BEA899C0DAECE49256A28001CE017.html