I am a reseller with Hostforweb.com and have a minor problem that is turning into a major problem.

A number of email addresses within my client can't receive server generated activation or verification emails, and therefore, cannot join many professional sites. It seems to be problematic with php generated email. The last two sites that I have tried to join are:

Drupal.org and Joomla.org.

HostforWeb keeps saying that is the fault of the webserver that I am trying to activate membership on. I am getting the royal run around while I am losing paying accounts.

Any body with this problem on HostforWeb.com or any other web host?

Also, I can receive the verification email on other mail addresses - both POP and IMAP