I am not receiving “your alerts” notifications

For a week or so now I have not received any alerts regarding new posts in threads I have participated in.

I have manually checked a few of the threads and new posts have been added.

I have the “alert me” box checked in my overall preferences, and check the individual alert box on each post.

I have not changed the email account associated with my membership.

I don’t know if something has changed at the mail server handling the account. It’s run by a developer friend of mine, I’ll ask next time I see him on IM. (which should be any minute now)

Am I missing something? Doing something wrong? Banished to the wilderness for forty days??