| Koff and outlook 2010 [message #127498] |
Fri, 29 January 2016 10:36  |
stresslein
Messages: 9
Registered: January 2015
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Hi everybody, 
we have nearly the samr issue like realnetwork (#126857) from Jan 2016
new installation, kerio is installed on a brandnew IBM Server with 32GB RAM
2012R2 OS installled, 10 Workstations with win7, outlook 2010 or 2013 installed
on both, server and WS is Kerio 9.0.1 installed
when the customer starts outlook, it takes a long time to start (up to 1 minute)
but after that, when he changed the folders from f.e incoming to sent items, or any archive folders
it takes up to 5-10 minutes, to display the content, the next folder the same problem
it looke like that users with large mailboxes are affected, we are talking about >10.000 Mails
in each folder (inbox and sent items)
i´ve done so many test, like realnetwork , with index, addons disbled, caching , new notebooks to doublecheck whether the workstations are the problem or not, every time the same issue
sometiomes its not fast, but they can work wth kerio, most of time it´s incredible slow
and the don´t want work with kerio any longer
I need a fast solution or we will loose the customer because of Koff client
for your information, the same Workstations with Webinterface works really fine,
without any problems in seconds, so it´s a problem with Koff
what can i do, any ideas are welcome
Chris
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| Re: Koff and outlook 2010 [message #127576 is a reply to message #127498] |
Mon, 01 February 2016 18:46  |
Maerad
Messages: 275
Registered: August 2013
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Well - congratulations, you just found a quite common outlook problem.
This has almost nothing to do with kerio, I had the same behavior with exchange too. The Kerio Connect Webclient only lists like 40 messages. Outlook on the other hand, displays EVERYTHING in the folder. If there are 20k mails in it, it will load them all. Just open the folder in Outlook and see the CPU and HDD spike in the taskmanager.
There are two ways to help there.
Cheapest:
Create a subfolder "archive" and maybe after years (2008, 2009 ...) and archive the mails older like 3 years there. This WONT impact their work! They can search in the mail folder and if nothing is found, they just need to hit the "search all folders" button.
External Software:
The program mailstore archives the mail by itself, so the user only has the most current stuff ready in outlook. Older mail is archived separately. Works but costs.
And a third thing comes to mind.
The server itself looks ok (SAS Raid 10 or something like that? SATA is baaddd) but the problem might be the client. KOFF saves the mails from the server in a local cache (userfolder somewhere) for offline browsing and because MS is a dick (and keeps a exchangelike connection for outlook itself). That means, if your client loads a folder, it's loaded from their local disk and synced with the server. If the client lacks a bit cpu power, ram or has a slow sata disk, it might also be a problem.
A fast and clean way to change that - get a cheap SSD with enough space for their mails (check the cache size) and set a registry key for the cache to the SSD. I do that on a terminal server enviroment with 25 users and it's fast like nothing else. No problems so far 
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| Re: Koff and outlook 2010 [message #127690 is a reply to message #127578] |
Thu, 04 February 2016 08:26 |
stresslein
Messages: 9
Registered: January 2015
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Dear Maerad,
first of all thanx for your fast help and input
but, that´s what i´ve done 1 week ago,
and i can´t see any other significant behavior
i moved a lot of mails into some "Archive" Folders, but i must wait sometimes up to 5 min.
when i change from inbox to any othe Folder, not every time but mostly
and yes, we have installed mailstore because we know this program, but not configured right now, we will do it this Weekend, hopefully it helps
and many thanks for the Performance idea with ssd and sata.
it´s a raid, as i know raid 5 with SAS HD´s, but i will doublecheck
so you mentioned that sync between the local Cache file and the Server Folder structure could be the problem, i dont know how often the Client syncronize, every time interval of f.e. 15 min or just at Outlook start ? can i Change any other Parameters in this way
or ist the koff client fix, without any Settings
otherwise i will change the Location for the Cache file and see what happens
many thanks again
and i will Report again
Chris
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| Re: Koff and outlook 2010 [message #127703 is a reply to message #127690] |
Thu, 04 February 2016 14:11 |
Maerad
Messages: 275
Registered: August 2013
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stresslein wrote on Thu, 04 February 2016 08:26
first of all thanx for your fast help and input
but, that´s what i´ve done 1 week ago,
and i can´t see any other significant behavior
i moved a lot of mails into some "Archive" Folders, but i must wait sometimes up to 5 min.
when i change from inbox to any othe Folder, not every time but mostly
and yes, we have installed mailstore because we know this program, but not configured right now, we will do it this Weekend, hopefully it helps
Some other ideas come to mind.
- KOFF correct version for the server?
- Any special OutlookAddins?
- Did you exclude KOFF (.exe) and/or the cache folder from any kind of antivirus check?
- Does the antivirus have some kind of packet inspection firewall thing, that could interfere with the data send/received?
- Do you use redirected userfolders? KOFF saves the cache in the user dir and if that is synced with the server, it's a eavy impact on performance. Here's the different cache usefull.
Also please open the taskmanger and resource manager and if outlook hangs, check the programs that go batshit. Might be a clue too.
Quote:it´s a raid, as i know raid 5 with SAS HD´s, but i will doublecheck
so you mentioned that sync between the local Cache file and the Server Folder structure could be the problem, i dont know how often the Client syncronize, every time interval of f.e. 15 min or just at Outlook start ? can i Change any other Parameters in this way
or ist the koff client fix, without any Settings
otherwise i will change the Location for the Cache file and see what happens
I guess the server should be ok, even with a raid 5 with SAS HDD (10-15k ones) should be ok. YOu could also check the server usage on cpu and hdd to be sure.
You can also check my other thread when we started with kerio and how we sucesfully used it on a terminal server with 20-25 users and cache on SSD with deplyment automagically and with gpo.
http://forums.kerio.com/m/108341/#msg_108341
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| Re: Koff and outlook 2010 [message #127941 is a reply to message #127703] |
Mon, 15 February 2016 13:47 |
stresslein
Messages: 9
Registered: January 2015
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Dear Maerad,
just as a Feedback
we installed Mailstore this weekend and "moved" thousands of Mails to the Archive System
without success
the inbox and all other Folders are much smaller, less then 5000 Mails
but the issue is the same , no difference in Outlook
searching or changing the Folder ist as slow as before
the next step will be a SSD and changing the Cache file path
hopefully it helps, otherwise i have no idea what i can do
Thanks Chris
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| Re: Koff and outlook 2010 [message #128333 is a reply to message #127498] |
Fri, 04 March 2016 10:47 |
Behn EDV
Messages: 10
Registered: October 2011
Location: Germany
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We had the same problem with a very slow behavior of Outlook 2010.
The used PC arent very slow but the problem get worser und worser.
Some Users had more than 20000-30000 mails.
After a change of the harddrive to a SSD (Samsung EVO 850) the problems there solved!
so i can VERY recommend to chance to a SSD if you have this problems.
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