Here are simple steps on how to send an email using telnet. This a great way to test your mail server configuration such as exim, sendmail or postfix without a need for a email client. First telnet to yor mail server:
$ telnet mail.mymailserver.com 25
Use HELO command to tell mail server from which domain you are coming from:
Now we need to state from which address this email will be sent. This is done with MAIL FROM: command:
Next step is to specify recipient with RCPT TO:
Now we ca star writing some subject and body. To do that we need to use DATA command. First type DATA followed by Subject: and body. Once done enter . to send email to be queued.
DATA Subject: Sending an email using telnet Hello, Here is my body? Do you like it? cheers .
Do not forget "." at the end of the message. To quit type