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Exchange 2010 log files growing like crazy

Posted on 2011-03-18
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Last Modified: 2012-05-11
Hi,
We have a client who is running Exchange 2001 SP1 who is seeing a large amount of transactions logs being created every minute.

I took a sample of the logs today and this is what I am seeing so far.

At 1:12 there are 227 logs for just that minute

At 1:14pm there are 470 logs for just that minute.


Backup Exec 2010 R2 with the Exchange agent does run at night so the previous day’s log files are getting purged.   The issue is with why are so many logs files being generated.   There are over 125 gig of logs files in the Mailbox Database folder.  

I have checked with other clients we have running Exchange 2010 and I am not seeing this issue with any of them.    

The server is a 2008 R2 Member Server.  

Any help would be greatly appreciated.  I haven’t seen this before, at least not on this scale of volume.
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Question by:montyjenkins
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ucando1 earned 500 total points
ID: 35170189
Run a backup using the Windows Backup, see if that deletes the logs. Then see if the file grows that fast again.

How many users are there, and is the server spamming. Always good to check the queue.
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by:montyjenkins
montyjenkins earned 0 total points
ID: 35170196
The logs do get deleted after the backup runs at night.   It's the current day log that grows like a mother!

50-60 users

The server send out via a 3rd party smarthost so easy to see outbound traffic which doesn't show anything out of the ordinary.  

Agree on your thinking though.   I am going along the same lines.   The server is a little busy but not that busy to be generating over 200 logs per minute before the data get written to the database.
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Expert Comment

by:rjpilcher
ID: 35170197
I've noticed this before on Exchange 2010.  Here's some things to look at:

1. Are mailbox moves taking place?
2. Are users importing mail from PSTs
3. Is it possible someone is deleting a lot of items?

Is this recurring or something recent?
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by:rjpilcher
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by:montyjenkins
ID: 35170202
1. No moves taking place.  The server was put into production hmmmm just under a month ago.

2. All of the users "50-60" of them had their PST's imported into the store.  This client didn't have Exchange Prior.  They were using a POP service.     No imports of PST's have taken place for the past month.

3. Not postive on the deleting, I would have to check but I would guess no since this event is re-occurring.
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Author Closing Comment

by:montyjenkins
ID: 35767586
Thanks for the input into this question.
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