[BlueOnyx:03530] SMTP Relay Issues

[bluequartz at ozin.com]

Does this make sense to anyone:

I add a new domain and make sure it is enabled for email.
I add a user to that domain and make sure she is enabled for email.

Mail to that user is refused until I go to the GUI:
Server Management
Network Services
Email
Untick Enable SMTP Auth
Save
Tick Enable SMTP Auth
Save

I think this is a bug.
As I say does this make sense to anyone?

Jason