Mailbox size in Exchange 2003

One of my user want his mailbox to be bigger than 2 gb. How can I give him bigger mailbox ?
Today Exchange only allow 2 gb.
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Raymond PengSystems EngineerCommented:
Lee W, MVPTechnology and Business Process AdvisorCommented:

Posting JUST links is frowned upon and considered unprofessional by many experts.

Since the question was regarding Exchange and NOT Outlook, Exchange 2003 supports mailboxes greater than 2 GB with no problems.  It's possible you have a QUOTA on the mailboxes limiting them to 2 GB though.  I seem to recall (though I could be mistaken) that you could not set a quota higher than 2 GB, but you can REMOVE the quota.  

Then you have to be careful about Outlook.  If you're using Outlook 2003 (MAYBE earlier) and DEFINITELY later, the default OST format (which stores your Offline cache of your exchange mailbox) is Unicode which allows for MUCH larger mailboxes.  If the format of the OST file (or any PST file) is ANSI, then you are limited to 2 GB for the file.

Keep in mind (especially l33tf0b) it is possible to use Exchange WITHOUT Outlook thanks to OWA, so Outlook MAY not (though I grant, probably does) have anything to do with this.

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soffcecManagerAuthor Commented:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Your point?  You posted just a picture with no description?
Lee W, MVPTechnology and Business Process AdvisorCommented:
That's related to Quotas - a Warning Quota - which I told you: I seem to recall (though I could be mistaken) that you could not set a quota higher than 2 GB, but you can REMOVE the quota.  

Put another way - leave those values EMPTY.

2GB limit for setting quota is only for AD Users & Computers console. You can setup higher quota, but you need to do it directly in Active Directory. You can use ADSI edit for it.
It's this attributes:
- mDBStorageQuota
- mDBOverQuotaLimit
- mBDOverHardQuotaLimit
all numbers are in KB.
For easy find out - first setup quota in ADUC console to some nice numbers, and then in ADSI edit you can easily find it modify these numbers to anything you want.

soffcecManagerAuthor Commented:
If I leave the values BLANK, will the mailbox then grow indefinitely ?
What about the database file on Exchange 2003, how can cat it be ?
If it's blank - exactly not blank but enabled to inherit  mailbox database limit setings.
So it takes settings defined there.
Good practice is to design mailbox databases to group users with same mailbox sizes, and configure limits on mailbox database, rather then do it individually in Active Directory. AD user settingts should be only exceptions.
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