Is anyone else running DotNetNuke and using the Active Forums module on Lunarpages Shared hosting?
As installed AF will try to send 200 emails every time the scheduled email task runs (default of every 5 minutes). As such it will flood the SMTP server and quickly get you blocked. However, with a bit of work and some help from the developers, I've got a solution that works.
Post here if interested.
Peninsula Astronomical Society