do you get that message when you send to all addresses? If so, speak to your
email administrator. If you only get it in an NDR from a few addresses,
their server is refusing your mail because the IP block is known to send
spam.
--
Diane Poremsky [MVP - Outlook]
Author, Teach Yourself Outlook 2003 in 24 Hours
Coauthor, OneNote 2003 for Windows (Visual QuickStart Guide)
Author, Google and Other Search Engines (Visual QuickStart Guide)
Join OneNote Tips mailing list:
http://www.onenote-tips.net/