I've installed postfix according to the guide @ http://library.linode.com/email-guides/ ... an-5-lenny for debian, and I'm stopped on one part.

I've got everything worked out so far, only problem is, when I was at the 'telnet localhost 25' part, it worked, although the command 'ehlo localhost' wouldn't show up anything.

Now, I completed rest of the steps, and everything seemed good to go, however, when I added the client onto thunderbird, it didn't have pickup SMTP, only IMAP.

Anyone know what went wrong?

Define "it worked". You connected? Did you get ANY output?

Is postfix running and listening on port 25? [code]sudo netstat -nap | grep :25" should show "master" listening.