This issue is across the board for moderator notification, reply to message notification, and private message notification.

If the person's E-mail address that is in their profile is hosted at our site (themomsconnection.com), they do not receive ANY E-mails at all (the accts work fine in regular test E-mails away from the boards).

In various tests that we ran, if the address was from anywhere BUT @themomsconnection.com, all notification worked perfectly.

We are running version 5.47e.

Just in case, the URL to our board is:

TMC Boards

This sounds like a hosting issue. The fact that some emails are sent should mean the ubbmail is functioning. Perhaps they should check the sendmail settings for your server. If they can't clear it up, please reply here so we can explore other ideas.

Yes, sounds like something on the host side. You might check to see if they have any sendmail logs that might show detail on what is happening with the emails being passed over from UBB.