I have a mailserver setup with IS, but i connect with saix the mailserver doesnt send mail, give a permanent delivery failure.... Is there anything, exept the DNS that need to change in order for the to work?
LOL ... MAO is a bit frazzled ... IS's SMTP server does not allow any non-IS ip address to use it without authentification.
Email [email protected] and ask them what username and password you can use to get authorisation to use YOUR mail server from a different service provider.
IS can create/give you one.