# telnet mail.example.com 25
HELO foo.bar.com
MAIL FROM: user@foo.bar.com
RCPT TO: foo@example.com
DATA
From: user@foo.bar.com
Subjet: Test Mail
Hello world.
.
QUIT
HELO foo.bar.com
MAIL FROM: user@foo.bar.com
RCPT TO: foo@example.com
DATA
From: user@foo.bar.com
Subjet: Test Mail
Hello world.
.
QUIT
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