- Open a telnet session: From a command prompt, type telnet, and then press ENTER.
- Type set local_echo on a computer running Microsoft Windows® 2000 Server or SET LOCALECHO on a computer running Windows Server™ 2003 or Windows XP, and then press ENTER. This command allows you to view the responses to the commands.
Note: For a list of available telnet commands, type set ?.
- Type o <your mail server domain> 25,and then press ENTER.
- Type EHLO <your mail server domain>, and then press ENTER.
- Type AUTH LOGIN. The server responds with an encrypted prompt for your user name.
- Enter your user name encrypted in base 64. You can use one of several tools that are available to encode your user name.
- The server responds with an encrypted base 64 prompt for your password. Enter your password encrypted in base 64.
- Type MAIL FROM:<email@example.com>, and then press ENTER. If the sender is not permitted to send mail, the SMTP server returns an error.
- Type RCPT TO:<firstname.lastname@example.org>,and then press ENTER.If the recipient is not a valid recipient or the server does not accept mail for this domain, the SMTP server returns an error.
- Type DATA.
- If desired, type message text, press ENTER, type a period (.), and then press ENTER again.
- If mail is working properly, you should see a response similar to the following indicating that mail is queued for delivery: