Happens all the time. DL's are not reliable and become corrupt. Most of us
don't use them for that reason. You'll need to recreate the DL if you want
to keep using it.

--
Russ Valentine
[MVP-Outlook]
"Barry H White" Barry H wrote in message
...
When sending a message using a Distribution List the follow message
appears
"An internal support function returned an error"
The only option is OK but the message is not sent

There is an answer on Article Q222329 with the same problem but it relates
only to Outlook 2000. The problem seems to be addresses on the DL that do
not
match contact details in the address books

In Outlook 2002, you can go to the Dist list and press "Update" which I
think resolves problems or removes error address, but it does not seem to
work

Help Please