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Exchange Server 2003 Mailboxes

Posted on 2007-04-10
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Last Modified: 2010-03-06
I would like to know what is the Maximum number of Mailboxes that I am allowed in Exchange server 2003 standard ?
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Question by:SBSDUNBLANE
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Expert Comment

by:redseatechnologies
ID: 18881355
There is no real limit on mailboxes per-se, you a limited in database size.

-red
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by:SBSDUNBLANE
ID: 18881365
What is the Database limit as we are sitting at 25Gb.
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redseatechnologies earned 50 total points
ID: 18881380
In SP2, it defaults at 18GB, and can be extended up to 75GB

http://www.petri.co.il/change_store_size_limits_ex2003_sp2.htm

That regkey will show you what you are at.  Obviously, don't set it larger than the size of the physical disk...

-red
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Expert Comment

by:chris-k
ID: 18881394
One database per server

Maximum size of database: 18Gb (75Gb with SP2)

As far as I know mailboxes are only limited by actual database limits and physical disc space

Regards
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