UBB.threads PHP Forum Software Community Forums UBB.threads 7 Version 7 Support My forums will not send emails

vccachat.org

---My forums were originally on webintellects.com hosting. Worked great. Unfortunately had to move off of Webintellects.
---Moved it to GoDaddy. Apparently that was a bad move. The forums worked great, but wouldn't send email. (new registrations, password resets, etc.)
---People smarter than I recommended I move OFF GoDaddy. Live and learn. So....
---Moved it to HostGator.com. The forums worked great, but STILL wouldn't send email.
---Recommended i move it to a hosting company that had a proven track record of working great with UBBT.
---Moved it to Bluehost.com Same problems. Wont send emails.

I know of no way to diagnose the problem.
None of the hosting companies can provide any assistance.
Obviously I don't have a clue what i'm doing wrong.

So, anyone out there have any recommendations?

I'm out of options.

Thanks in advance if you can provide me some guidance.

Peter