To send a test email via Telnet, please do the following:

1. Open Command Prompt
   
   
2. Type:

   telnet IP_address_of_mail_server 25

   The server should respond with 220 (then identifies itself - possibly with several lines of 220 + text)
   
   
3. Type:

   HELO

   The server should respond with 250 (followed by human readable message)
   
   
4. Type in who you want the test e-mail to come from:
   

   mail from: you@yourdomain.com

   The server should respond with 250 is syntactically correct (or similar)
   
   
5. Type in who you want the test e-mail to go to:

   rcpt to: them@theirdomain.com

   The server should respond with 250 is syntactically correct (or similar)
   
   
6. Type:

   data

   The server should tell you to send data then CRLF period CRLF at end
   
   
7. Type your test message and then CRLF period CRLF (i.e. type a period on a line by itself then hit ENTER).
   The server should respond with a 250 message submitted to queue

The e-mail will then be submitted to the mail servers queue for delivery and the recipient specified in step 5 should receive it.