Multiple Read Receipts in Outlook

[Jonlas]

Hi,

I'm having some issues here with read-receipts in Outlook. We're using
Outlook 2000 SR1 in an Exchange2000 environment.
And my case here is:
- I have a user (sender) in Admin Group A who has turned on
read-receipts for all messages sent.
- There's this one recipient (in the same organization but is in Admin
Group B) from whom the sender always gets read-receipts of the same
e-mails sent months ago.
- The sender gets (once daily) the same read-receipts for the same
e-mail sent to this recipient.

Does anybody here have any idea what's going on? or any suggestions as
to what i should look next?

thanks in advance!

cheers,