Running Exchange 2003 - Database size is a maximum of 75GB - pretty sure have exceeded this

Running Exchange 2003 and the Priv EDB file is 55Gb and the priv.STM is 25Gb which is more than 75GB the reg change has been made to allow to 75Gb but surely it should be causing issues ?
Any idea as to why it is still runing and what symptoms should I start seeing and any ideas why I am not ?
ccfcfcAsked:
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Trent SmithCommented:
You need to run a database defrag in order to get the sizes back to a lower setting.  This can take quite some time so a weekend is a good time to do this.
ccfcfcAuthor Commented:
I know that and have run that before. I was hoping you might provide some details to my question.

But thanks, it took 3 days before to defrag the DB before.
Trent SmithCommented:
Here is a prior post from Experts Exchange and it contains a reply from the author after talking with Microsoft.  The .stm file is where Exchange holds all changed information.  I hope this answers the question better.

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_22679217.html
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ccfcfcAuthor Commented:
Still again, I know about defragging and what it does ...my question was specific about the size of the DB I though was a combination of the  EDB and STM which determines the overall size of the DB ?
If this is not he case and it is just the EDB then we have quite a bit of growth.
If it is the combination of both then, the maths says I have exceeded the max of 75B ....what happens as, I read that Exchange will keep un-mounting the DB through the day . THis is not happening so I am confused ..hence my question
Trent SmithCommented:
Each database is allowed to be up to 75 GB.  The above posted link is about the .stm file.

I have had the over sized limit issue before and it is horrible when the database disconnects its self randomly though the day.
ccfcfcAuthor Commented:
Ok.......
about how you calculate how big the overall DB ? - so I assume each EDB and STM cant be over 75Gb ? its not a combination of the both  ? Is that what you are saying ?
Trent SmithCommented:
The .EDB can be 75 GB and the .STM doesn't really matter since it changes based on the emails received.  You can look at the .STM as the temp database as the information is written to the .EDB.  How many users do you have?

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ccfcfcAuthor Commented:
We dont have many, under 50 accounts - AD accounts that is.
I was under the impression it was a combination of the both added together. So that not to bad despite 2003 not supported my MS any more.
Trent SmithCommented:
I would suggest doing mailbox cleanup by adding a .PST for your big users and move their emails to the .PST and then you can run the defrag and re-claim the space that was vacated from the moved emails.
ccfcfcAuthor Commented:
Do you have a link on that process ? I assume you mean by big users i.e. large mail box.
Trent SmithCommented:
Yes those would be the users to look at.  Here is the Microsoft link.

https://support.microsoft.com/en-us/kb/287070
ccfcfcAuthor Commented:
thanks for that
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Windows Server 2003

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