Dear All, We are using Exchange server 2007 with SP2. And the patch level should be SP2 with Rollup 5. We have enabled the mailbox access logging in mailbox servers. Besides, the logging level should be 5. Unfortunately, users reported that there are some problem occurred: 1) "The operation failed" during attach a email as an attachment in a new email 2) Cannot open a recurring meeting After failback the logging level to 1, everything resumed ok. Would you please advise how can I troubleshoot this issue ? Thanks, Tommy

I would start by going to Exchange 2007 SP3 with the latest rollup. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

I would start by going to Exchange 2007 SP3 with the latest rollup. Simon.Simon Butler, Exchange MVP Blog | Exchange Resources | In the UK? Hire Me.

Hello, Please firstly update to the latest version of Exchange. Then enable the mailbox access logging via EMC by: http://www.msexchange.org/articles_tutorials/exchange-server-2007/compliance-policies-archiving/exchange-2007-mailbox-access-auditing-part1.html Simon Wu Exchange Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.