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mailservice.exe just went ballistic!
Problem reported by Brian Bjerring-Jensen - VonBjerring GmbH - 5/22/2024 at 3:02 AM
Submitted

Slowed down the entire server and everything was running in turtle speed....

Build 8888 :)
Kyle Kerst Replied
5/22/2024 at 7:33 AM
Employee Post
Do you see anything across your logging in and around the time you saw the spike? Usually something is going on and I'd bet you have a user doing a big sync job or something along those lines :-)
Kyle Kerst Lead Internal Network/System Administrator SmarterTools Inc. smartertools.com
IN what log would that appear??
T
Tan Replied
5/22/2024 at 8:14 AM
It is very hard to trace such activity but if you happen to experience it again, run the network monitor via performance monitor and check which IP pull the highest traffic and match again the IMAP log
Doesnt give away anything....
Crazy. I have only seen it once before on an older buld (85XX)
Kyle Kerst Replied
5/22/2024 at 1:09 PM
Employee Post
Unfortunately Brian I can't indicate a single log for this. The source of temporary CPU usage could come from a variety of places, but the most common source is sync, indexing, someone sending to a large mailing list, etc. 
Kyle Kerst Lead Internal Network/System Administrator SmarterTools Inc. smartertools.com
KisWit Replied
6/2/2024 at 7:37 PM
Hello, We are planning to update from 8251 to 8888.

We need to ensure that such issues do not occur after the update.

Could you please share your environment details? 
How many users do you have, and do you use Outlook?
We have about 1800 users, and approximately 1000 of them use Outlook.
Cant guarantee anything. We use outlook on 100% of the clients along with IOS and Android.
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