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Mailbox store dismounts periodically

Due to some internal reason we performed Disaster Recovery of Exchange standard 2003.

We recenty did a disaster recovery on the Exchange standard Server with Service Pack 2.  The new server is also running Exchange standard server SP2.  The new server is now working very well.

But the problem is that the mailbox is getting frequently dismounted. One we mount the mailbox store, then everything is working fine, but after sometime it again dismounted.

Need your help to solve this problem.
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Francis Michael
Asked:
Francis Michael
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1 Solution
 
Hilal1924Commented:
Do the following to isolate the issue;

1. Check Event Log's For description why it dismounted ?
2. Make Sure There is enough Disk Space and Performance is upto the mark.
3. Use Exchange Best practices Analyzer to verify your settings and use the recommendations that it throws.
4. Make Sur you DC's, DC's are wowking fine and there is no network issues.
5. Patch Up your Server with latest Updates and RollUps.

Try this out and let me know if it works for you.

Cheers,
Hilal
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AkhaterCommented:
probably your database is bigger than the size allowed in registry ?

what is the size of you edb file ? > 16gb ?

any relevent entry in the event log ?
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Glen KnightCommented:
This is probably due to your information store reaching it's limit.
In Exchange 2003 prior to Service Pack 2 this was limited to 16 GB
 
Check the application log on your Exchange Server for the following:
 
Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 1112
Description: The database "Mailbox Store (Server Name)" has reached the maximum allowed size. Attempting to unmount the database.
 
Event Type: Warning
Event Source: ESE
Event Category: Space Management
Event ID: 445
Description: Information Store (3160) The database D:\Program Files\Exchsrvr\MDBDATA\priv1.edb has reached its maximum size of 16383 MB. If the database cannot be restarted, an offline defragmentation may be performed to reduce its size.
 
If this is the case then Services Pack 2 can be applied for Exchange Server 2003 from here: http://www.microsoft.com/DOWNLOADS/details.aspx?familyid=535BEF85-3096-45F8-AA43-60F1F58B3C40&displaylang=en
If you are running Small Business Server 2003 then you need to ensure that you have SP2 for Exchange along with SP2 for Windows and SP1 for SBS: http://www.microsoft.com/windowsserver2003/sbs/downloads/sp1/default.mspx
 
Once you are running SP2 for Exchange you can increase the size of your Information Store Limit but following this article: http://support.microsoft.com/kb/912375 upto a maximum of 75GB
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murli30Commented:

Increase the Database size in Registry and that will resolve the issue

Follow the article mentioned below:-
http://support.microsoft.com/kb/912375 
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Glen KnightCommented:
How was the answer you accepted more helpful than the post I provided?
It even includes the same link I provided?!
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Francis MichaelIT ManagerAuthor Commented:
Demazter,
Your post is very good. I did go through your solution carefully.  However, for some reason, I was not able to open up your link, even after I googled kb912375.  Perhaps my network was flaky.  After some time I checked in again on "experts-exchange", saw a new post and clicked on the new link and got my situation resolved.  FYI - I do appreciate your detailed solution and furthermore I did provide an "A" grade for your solution.  Hope this clarifies.
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Glen KnightCommented:
The solution you accepted included the exact same link as the one I used in my post.
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Hilal1924Commented:
@demazter .. Bro So What if he accepted the other Answer. It hardly matters because ultimately we are here to help. Actually all three Answers were right. In fact If he had gone by my solution he would have resolved it as well. And he might have found some other issues that would have needed to be fixed by running ExBPA. So Stop Complaining and being senior than most you should be more generous.


Regards,
Hilal
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Francis MichaelIT ManagerAuthor Commented:
AnnieMod,
1.  Since the question is reopened, are the previous entries from Hilal1924, Akhater, Dematzer and Murali30 void?  If not,
2.  I suggest the credit must go to Demazter.
3.  Comments?
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murli30Commented:

Hey Chill Guys

Only reason i gave solution on this issue because i thought the link provides the entire resolution and
francismichael might not get distracted by other steps...) that was my thought nothing else

Dosent matter who gets the points the resolution provided is important.

Thanks!!!
Murli
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Francis MichaelIT ManagerAuthor Commented:
Thank you.
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