How To Test SMTP Services Manually in Windows Server 2003

Test the SMTP Service
To test the SMTP service, follow these steps:

1. On a computer running Windows Server 2003, type Telnet at a command prompt, and then press ENTER.
2. At the telnet prompt, type set LocalEcho, press ENTER, and then type open 25, and then press ENTER.

The output resembles the following:

220 computername.microsoft.com ESMTP Server (Microsoft Exchange Internet Mail Service 5.5.2651.58) ready


3. Type helo me, and then press ENTER.

The output resembles the following:

250 OK


4. Type mail from:email@domain.com, and then press ENTER.

The output resembles the following:

250 OK - mail from


5. Type rcpt to:youremail@yourdomain.com, and then press ENTER.

The output resembles the following:

250 OK - Recipient


6. Type Data, and then press ENTER.

The output resembles the following:

354 Send data. End with CRLF.CRLF


7. Type Subject:This is a test, and then press ENTER two times.
8. Type Testing, and then press ENTER.
9. Press ENTER, type a period (.), and then press ENTER.

The output resembles the following:

250 OK


10. Type quit, and then press ENTER.
The output resembles the following:

221 Closing Port / Mail queued for delivery