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CMDITTeam

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Hi,

We have an issue with one mailbox.

All of the emails sent to that account stays on the "Message Queue Processing" tab with "Local Delivering" status. The CPUs on the server are running on 90-100% for hours.

Usually everything is fine, but this happens 2-3 times a week.

Also when this happens other users start complaining about not receiving emails.

I had to increase the number of threads otherwise when there are too many emails stuck for the user the whole email server stops delivering emails.

If I stop the Kerio connect and restart it then the users start to receive emails again, but this does not solve the issue with the wrong mailbox.

I have tried to reindex the mailbox, but did not help.

How could I solve this issue?

Thanks for your help.

Regards,
Peter

We are using:
Kerio Connect 8.0.0 build 639
The users mailbox is 24GB with 190 000 emails.
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MacLab

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Mailbox might be too big for the drive to handle the activity. What is the hardware for the server and what is the client using?

MacLab, Inc.
Kerio Certified Partner, Reseller, Hosting Provider, Kerio Connect Certified.
http://maclaboratory.com
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CMDITTeam

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Hi MacLab,

Thanks for your answer.
Currently we are trying to move all of the emails from the users inbox to a subfolder (at about 6000 emails). Someone wrote that it could solve an issue like this, as the real issue is with the indexing.

The Kerio is on a virtual VMWare server.
- 8GB ram
- 4 cores of Intel Xeon E3-1275 V2
- 7200rpm Hard Disk with RAID 1

The client is using office 2003 with kerio connector.

We have at about 10 mailboxes and the user receives less than 100 emails per day. The other 9 user even less.
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MacLab

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Well, that is quite a bit of indexing. Putting in subfolders should help. You might want to update to 8.02 as well. And maybe consider what the upper limit on storage is going to be per account including number of items.

MacLab, Inc.
Kerio Certified Partner, Reseller, Hosting Provider, Kerio Connect Certified.
http://maclaboratory.com
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CMDITTeam

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Currently the limit is 2GB per mailbox. The only exception is the one that we have issues with, but it cannot be limited.

There is no limit on the number of items.

Are there any recommendations for size and number of emails that should be set?
  •  
Vicky

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Hi,

We recommend that each mail/calendar/contact folder contain no more than 10,000 items. The closer the user gets to 10,000 items then the slower the performance can get when accessing their mail account. This is something the user has to manage as there is not a way to set a limit in the Web Admin to do this sadly.

In regards to file size, this no real hard limit but I have seen some email clients struggle when there is a large email in a folder such as over 50MB. So you may want to set a limit for incoming and outgoing attachment size to something sensible like 25MB and that way the users will not have large emails sitting in their mailbox.

All the best,
Vicky
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MacLab

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Put a limit on number of items too. This will only be an overall limit, but it will at least act as a kill switch in case something goes wrong.

MacLab, Inc.
Kerio Certified Partner, Reseller, Hosting Provider, Kerio Connect Certified.
http://maclaboratory.com
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