Annoyed at email and egremlins

I just got an email bounced back, an email which I sent Wednesday morning, which has apparently been in queue and not showing up in his inbox all that time.

An email to a friend, requesting the phone number of an artist with whom I need to do a phone interview if I'm to write the preconcert piece the local paper wants by tuesday next.

Along with two emails from the same fellow, in response to another email that I sent at practically the same time.

Does anyone know a good way of killing egremlins? Preferably a painful one? :-)