I checked CONTACT EMAIL ADDRESS and RETURN EMAIL ADDRESS and both are the same email address which is hosted on DH.
I read the spoofing policy and the email that gets sent out is from my domain on DH so this should not be the problem.
When I register an account with another email address to test it out I receive the registration email from the email address I have in the CONTACT EMAIL ADDRESS and RETURN EMAIL ADDRESS which is, for example, firstname.lastname@example.org (located on DH). When I log into DH mail (SquirrelMail) Whoa... wait a sec.... they are there in SquirrelMail now! Is there a delay ?? Also, none of the activation emails that are there now did not forward to my work email which I setup forwarding in DH.
Hrmmm.... let me register again...
EDIT: I just registered again and it worked. An email was sent to the new member and the admin. The only issue now is that I have forwarding on my DH admin email and that didn't work (unless there is a delay).
EDIT 2: I sent an email from Gmail to my DH admin email and it forwarded to my work email so forwarding is working. The ISSUE now is why does it not forward when it is sent from a new member when they register in phpBB??