During the last two weeks I have starated to get returned email with a
Subject of "Returned mail: delivery problems encountered" . These emails
have a Permanent Failure message "Other address status." I have been
exchanging emails with these people for year, and now I get this returned
mail message. I have called two of these people, and their email address has
not changed, and and the address I am using is correct. What is happening?

Below is the actual message copied from the returned mail:
----------------------------------------------------
Subject: Returned mail: delivery problems encountered

A message (from ) was received at 27 Feb 2006
22:11:47 +0000.

The following addresses had delivery problems:


Permanent Failu Other address status
Delivery last attempted at Mon, 27 Feb 2006 22:11:48 -0000