Unknown user when sending a meeting request

[Criz]

Hi

We send e-mails and appointment requests to another
company on a reqular basis. We have set up key personal
as contacts in our Global address list.

One of the the poeple we send to had a corupt mailbox so
it was delted and recreated.

When we send/reply an e-mail to this person it arrives in
there mailbox. Howerver when we create an appointment in
celandar and send it to them we get a #5.1.1 message back
saying

"The e-mail account does not exist at the organization
this message was sent to. Check the e-mail address, or
contact the recipient directly to find out the correct
address.The MTS-ID of the original message #5.1.1"

It looks like meeting requests is using the original SID
for the mailbox, as the e-mail address is the same and
correct.

Any ideas how to fix this?

Thanks in advance

 

[Criz]

Also forgot to say, we are currently running Outlook 2002
on the desktops, both companies run Exchange 2k