Hello - not sure if this is the correct place for this question, but this is where my search for active modules brought me.

I'm running Active Forums version 3.7.  I'm getting bounced emails for a user email that no longer exists.  I assume that it did at one time and was subscribed to the forum, but a user with this email address no longer exists.  It seems that email addresses for notifications are not associated with user accounts, or in this case the relationship somehow broke.  Is it possible to correct this?

It is possible that the user still exists in the database, but is just marked as deleted. Depending on what version of DNN you are using.