The first thing I would check is:

Is your creating client using his own contacts to select the recipients? If
so,
he may be using old information. Have him delete them from his contacts and
use the GAL. If this is not the case, perhaps he is using his Outlook
"NickNames"
feature to select the clients. Have the client delete the names from his
nickname
cache and try fresh from the GAL.

There is some information on the "NickNames" or "Name Resolution" feature
at the following URL:
http://www.slipstick.com/contacts/index.htm#resolve

Nikki Peterson

"Macinslaw" wrote in message
...
We are running an exchange 2000 server with Outlook 2002 clients. I have
only one user who is having an issue:

He will create an appoinment to several users. The appoinments go out
fine.
But if he recalls, changes or updates the appointment, an error message
gets
generated as an email stating that several users do not exist. The list
fluctuates a little, but there are 2 in the list that are always on the
list.
I have racked my brain and cannot find a resolution to this issue. I have
performed a re-install of Office, a repair install of office, deleted
cache,
deleted contact list and checked it, defragged, checked for malwayre, used
every search parameter I can think of and I am unable to find anything
even
close to tis issue.

Can someone please assist us with this, this user is really on my back
about
it, this feature is probably the only one he really knows how to use the
best! LOL

Any help would be appreciated.