How to test SMTP Server operations using Telnet
1. Telnet into SMTP Server using TCP port 25. Command is telnet <servername>
25
2. Issue the following smtp command sequence helo <your domain name><enter>response should be as follows 250 OK mail from: <your Email Address><enter> response should be as follows 250 OK - mail from <your Email address>rcpt to: <recipient address><enter> response should be as follows 250 OK - Recipient <recipient address>data<enter>response should be as follows 354 Send data.End with CRLF.CRLF
To: <recipient's display name><enter>
From: <your display name><enter>
Subject: <Subject field of Email message><enter>
<Enter you body text><enter><enter>
. <enter>
response should be as follows
250 OK
quit<enter>
