Exchange 2013 pst import looping

Hi Everyone

Please can you help with the following :

OS : Server 2013 Std / Exchange 2013 Std { loaded in same environment - inherited from previous admin }
Updates : Fully updated

We recently took over a site that could'nt be administrated by the internal admin.
The problem we encountered is that the Exchange database grows by atleast 20GB every 2 - 3 days.
I've read up on this a bit and have picked up that it could be a pst import that is looping.
If so how can i resolve this.

The previous Exchange DB on SBS2003 was 25GB in size holding all user mail.
The DB on the Exchange 2013 is now sitting at 184GB.
Something is very wrong.

Thanks
aNaLyz3RAsked:
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aNaLyz3RAuthor Commented:
The fastest way to complete this at the moment is to migrate all the mailboxes to a new DB. It may take some time as you need to find the mailbox that is causing the white space within the old DB. Once found, i exported the mailbox data of the faulty mailbox, deleted the mailbox, recreated and restored the data.
Once i migrated all mailboxes, i deleted the DB that grew to a size of 300GB from 19GB.
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Don ThomsonCommented:
Go into the Exchange Management Shell

Paste this into the cmd line

Get-MailboxStatistics | Sort-Object TotalItemSize -Descending | ft DisplayName,@{label="TotalItemSize(MB)";expression={$_.TotalItemSize.Value.ToMB()}},ItemCount

It will give you the size and number of items for each user - Find out which user has nmore than any other and check their workstation
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aNaLyz3RAuthor Commented:
It prompts for Identity:

Do i have to go through each mailbox accordingly?
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aNaLyz3RAuthor Commented:
Ok i have run the above and went through each user account.
If i check the amount of items in each user account it ranges from 432 to 17391 items.
What is regarded as high?
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Don ThomsonCommented:
I would say that 17391  is a bit high but if the one with 432 items all have 10 meg attachments then it could be the problem.   Look at the total size rather than the number of items.

Also have you done a full backup of the exchange - If not do so - the transaction log files could be getting in the way of giving you a proper size.

How many users does the Exchange box have?
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aNaLyz3RAuthor Commented:
I've checked the size of the mailboxes, they range from 40mb to 2900mb.
The logs files which are on a separate drive are 90gb in size, I'm going to do a full backup on that exchange ASAP.
The server hosts 18 users....
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Don ThomsonCommented:
With only 18 users the average size looks to be over 10 gig per user.  I would say do a backup and then use eseutil.exe /d <databasename> to defrag it

You may want to run the eseutil /g  and eseutil /p   as required

the eseutil.exe is located in the C:\Program Files\Microsoft\Exchange Server\Bin
folder.

My Database is in the C:\Program Files\Microsoft\Exchange Server\Mailbox\First Storage Group

folder so you would typically start by doing an integrity check using

cd \C:\Program Files\Microsoft\Exchange Server\bin

eseutil /g "..\mailbox\first storage group\Mailbox Database.edb"

to check the integrity of your db
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aNaLyz3RAuthor Commented:
At this stage i doubt defragmentation of the DB is going to help as the DB is still growing at approximately 4 GB per day.

I've read the below article, right at the bottom the person that experienced the same issue confirm how he resolved it, my question is, isnt there a faster way to resolve it and find the mail account that has the "loop" in it?

http://community.spiceworks.com/topic/438942-extremely-fast-database-growth-exchange-2013
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aNaLyz3RAuthor Commented:
Worked for my specific issue
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