Jack reinforces my earlier comment that when there is a problem, DISCOUNT NOTHING! Of course, a reasonable person will ask, 'How the heck am I supposed to know that this is the fault of the email system the host is using?'
Luckily Jack is knowledgeable enough to know what the problem is and kind enough to share it with the rest of us.
That kind of willingness to help other users is what makes these messageboards what they are.