I have 'the-perfect-setup' on an Ubuntu 6.06LTS box. I have had everything setup for a week or two and things seem solid, so I threw the switch and pointed my domain to my new server (instead of my pay host). Everything is great so far, I've got squirrelmail working just fine. I even got Mozilla Thunderbird configured to get my e-mail via IMAP. However, I seem to be having problems with SMTP authentication. My configuration is as follows server: domain.org port: 25 user: username I get a password prompt so I would logically believe that I am hitting the server, but just incase port 25 was blocked by my ISP I did the fix Clogboy suggested here. However I keep getting the same thing, a password prompt but it just won't take my password. I feel like I am missing something simple, please help! Thanks in advance.