$mydomain = domain.com
I am logged onto the server using squirrelmail. I haven't set it up on a software client yet.
Once you mentioned that, it hit me that it might be squirrelmail causing the problems, so I took a look at the config.php, and this section stood out:
$domain = 'localhost';
$imapServerAddress = 'localhost';
$imapPort = 143;
$useSendmail = true;
$smtpServerAddress = 'localhost';
$smtpPort = 25;
Is that where the problem is at? If so, what should I change it to? it doesn't say localhost.domain.com, it just says localhost. Should I just leave those as empty ticks on the $domain line?