Exchange 2003 Mailbox reaches its 16GB limit and dismounts

My SBS 2003 Exchange server has reached its 16GB limit and dismounted.

I have appllied SP2 and created two Database Size Limit in GB registry keys to increase the capacity to 50GB. For some reason I am NOT recieving the Event ID 1216 telling me that the storage limit has increase after I restart the info store service.

I have completed an offline defrag of the EDBs too and the server working for a while but then dismounted saying it has run out of space.

Any ideas on why I cant increase the limit? thanks
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Glen KnightConnect With a Mentor Commented:
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:

Once you are running SP2 for Exchange you can increase the size of your Information Store Limit but following this article: upto a maximum of 75GB
The service pack 2 for Exchange is not applied properly, otherwise you should be dismounted when the size reaches 18GB instead of 16GB.  Consequently changing registry key will not work.

Check the event logs to find out why SP2 didn't get applied properly, in any case you will need to re-apply it.
Double check the registry keys
Try to restart the whole server

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DaveyByrneAuthor Commented:
Thanks...Is it safe to uninstall SP2 from add\remove and reapply it?
You can just reinstall it over the top - Exchange SP2 is not the same as Windows SP2
DaveyByrneAuthor Commented:
SP2 was applied for windows but I needed to apply SP2 for exchange in order to increase the storage...thanks worked a treat!
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