It seems that people that use Comcast as an ISP can no longer recieve emails from forumco.com. For some reason, Comcast (which is HUGE here in the states) has flaged forumco.com emails as SPAM.
I called comcast and they are aware of the issue, but said that no further action would be taken by them unless they are contacted by forumco.
This means of course that nobody that uses Comcast as an ISP can join our forums.
If you could find out who I should contact in order to get forumco.com whitelisted then I'll follow it up.
Browsed comcast.net and comcast.com to no avail. Otherwise I will prevent all comcast email addresses from signing up (and suggest they use another email address) like I did with Yahoo before they whitelisted us.