Corrupt Exchange data store.  What happens if...

Posted on 2011-05-05
Last Modified: 2012-05-11
I have a corrupt datastore that does not appear that it is going to be recoverable...No need going into detail there...We will get right to my question....

Fairly small 15 or so computers.   All there computers have cached mail and they can still pull up outlook and see it.  If i make a new datastore and mailboxes for all those users will that mail move back to the server or will the server tell the clients there is no mail in there mailbox and make the client computer wipe its mail?

This is server 2008 x64
Exchange 2007
Outlook 2007
Question by:tsukraw
    LVL 5

    Expert Comment

    I had not had an Exchange Server Corrupted before.  However, I highly recommend you have all the users create an PST and backup their emails/calendar into it.


    Author Comment

    I am most likely going to export to a PST first.  But i was wondering if anyone can verify if that data will go back to a blank datastore automatically.  One of my co-workers says yes it will but i need someone else to verify this...
    LVL 10

    Expert Comment

    The cached file (OST) ist just a copy of the mailbox on the server. New mailbox will mean it will probably go blank so save data to PST first if possible.

    If you only have the OST-file there are utilities that can convert OST to PST (see

    LVL 31

    Accepted Solution

    No, the data will not synch back. The OST knows it is not paired with the new blank mailbox so won't synch. Outlook will just prompt you to say exchange is in disaster recovery mode and you need to choose to work Online (blank mailbox) or offline (full OST) but no mail flow.
    LVL 37

    Expert Comment

    As suguested already. Convert OST to PST. Set up new database and connect all clients, Import PST file once sync with exchange has occured for each client.
    LVL 31

    Assisted Solution

    Or simply open outlook in offline mode. File--> import/export -->export to PST

    Create new blank exchange DB (rename the old files and exchange will create a new blank DB when you mount the store)

    Close Outlook & Rename the OST on the outlook client so it will create a new one and connect to Exchange without prompting when it starts.

    Import PST

    Write Comment

    Please enter a first name

    Please enter a last name

    We will never share this with anyone.

    Featured Post

    How to run any project with ease

    Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
    - Combine task lists, docs, spreadsheets, and chat in one
    - View and edit from mobile/offline
    - Cut down on emails

    Create high volume marketing opportunities using email signatures with these top 10 DOs and DON'Ts of email signature marketing.
    Resolve Outlook connectivity issues after moving mailbox to new Exchange 2016 server
    In this video we show how to create a Distribution Group in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Recipients >>…
    how to add IIS SMTP to handle application/Scanner relays into office 365.

    779 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    18 Experts available now in Live!

    Get 1:1 Help Now