Vista - Unusual Calendar invitation failure notification

All,

I've been trying to wrap my head around this for quite sometime and it
seems to be a growing issue. Below is the problem and my troubleshooting thus
far:

Outlook 2k3 Server w/ Outlook 2k3 Clients w/ Office SP2 installed

Two people, UserA and UserB, are trying to setup an appointment within
Outlook 2k3. UserA sends UserB a meeting invitation and immediately gets a
failure notice that it could not send to another User, UserC. Now UserC was
never on the invitation between UserA and UserB. Note that UserB does not
have to accept the meeting invitation for the failure notice to go to UserA.

I have looked at UserB's Calender permissions and UserC is not listed in
there at all. I've also taken UserB's Outlook account out of cached mode and
run a Global Address List update which where that account for UserC would
reside.

**These failures tend to start as soon as UserC's account is deleted**

We have also searched out Exchange Server for UserC's username or any
reference to such and come up with nothing.

Also a note is that it doesn't matter who tries to setup an appointment with
UserB they always get a failure notice that references UserC's Undeliverable.

The only way we've been able to solve this so far is to completely wipe out
UserB's Email account by saving all thier data to a PST file and then
rebuilding it. I'm wondering since my UserC is a Outlook 2k3 dependant
individual if there is something else I can look for to fix this situation.

"JasonMa" <JasonMa@xxxxxx> wrote in message
news:3201A322-85D0-4134-ACC8-A33AEF7BDF6A@xxxxxx
<snip>
This is a programming newsgroup. You'll get a better response from someone
in one of the Outlook newsgroups.

--
Leon Mayne
http://leon.mvps.org/