Hey all,
For some unknown reason I am getting this message when sending Private Messages:

Ran into problems sending Mail. Response: 550 relaying to prohibited by administrator


The weird thing is the messages go through fine but I still get that error.
I have not made any changes to the configuration so I am not sure why this is happening. I am using Nuke 6.0 with the latest PHPBB port.

I have reuploaded the Private Messages and Your Account modules from the PHPBB port but to no avail.

Any ideas?