XFOR: Unable to Delete Read Receipts from Mail Sent to PROFS

When you attempt to delete or move Read Receipts to the Deleted Items, Outbox, or Sent Items folders using a Microsoft Exchange Client connected to Microsoft Exchange Server version 5.0, the following error message may appear: The Read Receipts that cause this problem were returned from messages sent to PROFS users, using the LINKAGE PROFS connector.

There are two workarounds for this problem:

1. If the Read Receipts are first moved to a personal folder (PST) file, they can be deleted.
2. If you log in Off-line and delete the Read Receipts, and then synchronize the Off-line personal folder (OST), they will be deleted.

Microsoft Exchange Server configurations that are affected by this problem include:

• If you upgrade Microsoft Exchange Server from version 4.0 to 5.0, any Read Receipts generated before the upgrade that still exist after the upgrade will produce this problem.
• If the PROFS connector is installed on a Microsoft Exchange Server version 4.0, Read Receipts generated from messages sent over the PROFS connector originating from a user on a Microsoft Exchange Server version 5.0 will produce this problem.

Microsoft Exchange Server configurations that are not affected by this problem include:

• If the LINKAGE connector is installed on Microsoft Exchange Server version 4.0, Read Receipts generated from messages sent from a Microsoft Exchange Server version 4.0 user across the LINKAGE connector to a PROFs user can be deleted.
• If the LINKAGE connector is installed on Microsoft Exchange Server version 5.0, Read Receipts generated from messages sent from a Microsoft Exchange Server version 5.0 user across the LINKAGE connector to a PROFs user can be deleted.

Microsoft has confirmed this to be a problem in Microsoft Exchange Server version 5.0. This problem has been corrected in the latest U.S. Service Pack for Microsoft Exchange Server version 5.0. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces):