To send a test email using telnet, these are the commands you need to use. Substitute your own hostname, mailto and recipient addresses. End the data with a full-stop on a line on its own and 2 Enters.

telnet hostname 25

.....

HELO

....

MAIL FROM: name@domain.com

....

RCPT TO: recipient@domain2.com

....

DATA

....

Type your data here.

.

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