!SMTP プロトコル

 HELO my.host.name
 
 MAIL FROM: <my-mail@address.my.host.name>
 
 RCPT TO: <your@mail.address>
 
 DATA
 FROM: <my-mail@address.my.host.name>
 TO: your@mail.address
 Subject: test
 test mail
 .
 
 Quit

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