SBS 2003 exchange store failing offline

I have an SBS 2003 machine with built-in exchange installed.

All worked fine for years, but now the store is constantly going offline. To get it back up, I need to manually set it online.

Any ideas what to do? I tried repairing and defragmenting database, but that didn't help.

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Seth SimmonsSr. Systems AdministratorCommented:
i would look at the event logs and find out why
my first guess is that it's hitting the storage limit and dismounting

take a look at this article
if you have SP2 installed you can increase it

Explaining the Database size limit changes in Exchange 2003 Service Pack 2
chlebiTeam Leader IT InfrastructureCommented:
What is the actual size of the database? Maybe it grew above the maximum limit set by MS. What Exchange service pack is installed?
mrmutAuthor Commented:
OK, guys - this is a start. Can't connect to the machine now (weird problem with TeamViewer), but will go there tomorrow, and report back!


(I am GMT+1)
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mrmutAuthor Commented:
OK, so my DB is 19GB large.

However, this being an SBS - I can't find the registry key to change DB max size! (I hate SBS. It lacks many tools of the actual software packages.)
Seth SimmonsSr. Systems AdministratorCommented:
I can't find the registry key to change DB max size!

did you look at the article i posted?  it's in there

chlebiTeam Leader IT InfrastructureCommented:
If the value does not exist just create it...
SBS is not that bad - in fact Exchange in SBS is not missing anything and is a full product :).
Also please not that you have to be on SP2 for this to work.
chlebiTeam Leader IT InfrastructureCommented:
See this MS article, it contains an automated FixIt tool that will do the job for you:

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