I have a user (Outlook 2003/Exchange Server) who sent an e-mail to another employee and is receiving a read receipt every 30 seconds or so from the recipient. This is rapidly filling up her mailbox. I set her up with a receive rule for the time being to delete the receipts but wanted to know if anyone has seen this before and what can be done to permanently remedy it.

Check the receiver's pst file, if it's too big (I don't know the exact file size), it can cause such problems.

Will Do. Thanks for the suggestion...