Undelivered Mail Returned to Sender for Distribution Lists

[nwellburn]

Hey all

I am having the following issue:

Running Windows XP SP3, Outlook 2003.

Now I when I try to send to a distribution list, it automatically comes back
with the following error:

Undelivered Mail Returned to Sender - for all of the email addressess in the
list, however if I manually add them all to the email, I can send it no
problems.

Kind of butting my head against a wall here so if anyone can help that would
be much appreciated!

regards
Neil

 

[Roady [MVP]]

What is the exact error message in the NDR?
Tried recreating the distribution list already?
Try it with 5 entries in it first before adding even more just to see if it
works in general or not.