Hi, I setup a dedicated server using Ubuntu 10.04 and ISPConfig 3. I think I have all working fine but the emails. The domains are resolving fine (all of them) and when I check for messages using mail2web there they are. But when I try to use Thunderbird I receive the error: wrong username / password. The records of the DNS are: A mail myIPaddress 0 A misviejosamigos.co.cr. myIPaddress 0 A www myIPaddress 0 MX mydomain.co.cr. mail.mydomain.co.cr. 10 NS mydomain.co.cr. ns1.mynameserver.com. 0 NS mydomain.co.cr. ns2.mynameserver..com. 0 If my email address is "email@example.com", I'm configuring the client this way: Username: esteban Incoming server: mydomain.co.cr I've also tried using mail.mydomain.co.cr and I receive the same error. Please, help.