Test SMTP operations using TELNET

SMTP (Simple Mail Transfer Protocol) is the protocol that the Internet mail is sent. You can send directly from the command prompt an e-mail, using Telnet. Telnet into Exchange server hosting IMS service using TCP port 25. (C:\Windows \ telnet.exe)

1. Click Start > Programs > Accessories > Command Prompt 
2. Type "telnet  <servername.sub-domain.com 25>", and press Enter
3. Type "HELO <servername.sub-domain.com>", and press Enter
4. Type "MAIL FROM:<your Email Address>", and press Enter
5. Type "RCPT TO:<Recipient Address>", and press Enter
6. Type "Data", and press Enter
7. Type "Subject:<Subject field of Email message>", press Enter twice
8. Type "enter your body text here.>" don't forget the final (.) in the text. Press Enter
9. Type ".", and then press Enter
10. Finally type "QUIT", and then press Enter.