Recently I received an error from Exchange server.

MSExchangeIS (2644) First Storage Group: A bad page link (error -327) has been detected in a B-Tree (ObjectId: 5, PgnoRoot: 10) of database H:\Microsoft\Exchange Server\Mailbox\First Storage Group\Mailbox Database.edb (165296 => 3185, 817790).

I cannot send any message, they just returned with the following error:

550 5.2.0 STOREDRV.Deliver: The Microsoft Exchange Information Store service reported an error. The following information should help identify the cause of this error: "MapiExceptionCallFailed..."

I used eseutil /d command but it gave me another error 1605 (JET_errKeyDuplicate, Illegal duplicate key).

I fed up to the neck with these errors. How to cure this disaster?

• Moved by Fei XueMicrosoft contingent staff Monday, February 16, 2015 5:53 AM
• Moved by Jason Johnston [MSFT]Microsoft employee Monday, February 16, 2015 3:09 PM Not a development question.

Simon_Wu suggested a good fix. 

I would to make an addenda and ask you:

Did you checked the state of your database? Is it in a clean or dirty shutdown? Run this command eseutil /mh. If your database in a clean shut state, then move all the log, chk files and use "This database can be overwritten by a restore".

If your database in a dirty shut state, then you should to bring your database to a clean shutdown. In this case I would suggest to run eseutil /ml, eseutil /r or eseutil /p commands.

And the last recommend is to use any tool, which can fix the problem. You can find a free or try a demo version. I heard that this one not bad - Recovery Toolbox for Exchange Server https://exchangeserver.recoverytoolbox.com/ 

Hope something will help in your case. 

• Marked as answer by Cloudvalley Blaze Tuesday, February 17, 2015 9:30 PM

I would like to refer more effective safe and secure software, you can download more effective Exchange Server Recovery Tool. That software smartly Contacts, Notes, Journals, Inbox, Reminders, Outbox, Attachments, Sent items and etc. Reference link - http://www.exchangeedbtopst.net