seems a firewall problem. stop it and test it again. if it works, allow localhost connections.
Ok, When i understand the manual correct, i must add the relay-domain under "eMail Routing" and "Global Filter > Relay Recipients)
Hi, i use ISPConfig 3.0.4. I want that a user/reseller can add relay-domains, but this option/funktion is not available. Cheers Oliver
Separate names with a comma.