Tuesday, December 18, 2007

Testing mail server via telnet

I get asked for the steps alot so here you go; specific to Exchange/Windows SMTP (some mail servers have slightly different steps)

1.Telnet exchangeserver.domain.local 25
This will connect to your mail server on port 25
2. Type "EHLO" to open the session
3. type "MAIL FROM: yourname@somedomain.com
4. type "RCPT TO: this is the domain hosted by exchange to which you want to test relay.
5. type "DATA"
6. Type your message
7. Then terminate the message with enter . enter
8. Type "QUIT"

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