Test SMTP service

To test the SMTP service, follow these steps:
1. Telnet localhost 25
2. Type helo me, and then press ENTER.
The output resembles the following:
250 OK
3. Type mail from:email@domain.com, and then press ENTER.
The output resembles the following:
250 OK - mail from
4. Type rcpt to:youremail@yourdomain.com, and then press ENTER.
The output resembles the following:
250 OK - Recipient
5. Type Data, and then press ENTER.
The output resembles the following:
354 Send data. End with CRLF.CRLF
6. Type Subject:This is a test, and then press ENTER two times.
7. Type Testing, and then press ENTER.
8. Press ENTER, type a period (.), and then press ENTER.
The output resembles the following:
250 OK
9. Type quit, and then press ENTER.
The output resembles the following:
221 Closing Port / Mail queued for delivery