This post is more than 2 years old.
I am aware of the "bombing" that has been going on the list. I am not sure why it is happening though. It looks like the email addresses that are no longer valid are having their failure notices showing up on list. That should not happen, of course. I am manually cleaning these people out when I can. I am going to open a ticket with MailEnable since it also appears we may have hit the max number of people for a mailing list, and obviously I want the list to grow.
However - I need to be away for most of today. So unfortunately I can't do anything else right now. I deeply apologize for any trouble this causes (boy do I love being an admin of a service ;) and I hope to have things cleared away tonight.