Antivirus causing Exchange Slowdown?

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Exchange security
Microsoft Exchange
I have CA eTrust 7.1 running on a Win2kSP4 / Exchange 2k SP3. It seems when the Mail client of eTrust and all of the other options of the eTrust client is running, (e.g.: Real Time scanner) the exchange server eventually slows down to a crawl. The server also has CA BrightStor Backup Agent RPC server, Discovery Service and Universal Agent installed on the server for CA BrightStor backups of the exchange server's stores. Does anyone have any idea what I can do to troubleshoot what is causing the problem, or has anyone experienced this problem before with eTrust causeing slowdowns to Exchange 2k?

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Hi,
This seems to be a problem caused with the file system antivirus which is scanning the exchange directories resulting in slowdown of exchange.In order to resolve the problem try to exclude the exchange directories ,please follow the Microsoft KB Article thoroughly..

http://support.microsoft.com/kb/823166

Mohd.Zia Ur Rahman
Network Specialist

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  • KeithD1967
    Thank-you Mohd.Zia Ur Rahman for the response. I tried what you suggested: look at KB 823166, but I don't have Ex2k3, I have Ex2k, so I used KB328841 instead. I excluded all of the folders as suggested to the KB article, and excluded services / *.exe files that refer to Exchange (store.exe, etc). Around 15:00, I turned on the CA email scanning option and the RealTime Scanner. Later on in the evening, our backup started and ran from 20:00 - 21:55EDT (GMT+4). Our Exchange server locked up around 22:00. At 21:50, got a System Event ID 26, "Application popup: store.exe - No Disk : There is no disk in the drive. Please insert a disk into drive A:." Now things are really interesting. Great! Now I am not sure if the AV has something to do with this or the backup, or if it is Exchange in itself having a problem. Anyone have any ideas? Thanks. Keith
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  • Serendipity
    There are some things you can do to optimize an Exchange server. Microsoft recommends setting the Page File so that the minimum size is the same as the maximum size. See this article for more information on optimizing using the Page File settings: http://support.microsoft.com/default.aspx?scid=kb;en-us;197379 If your operating system is W2K Advanced Server, and not W2K Standard, and your server has at more than 1 GB of RAM, you should add the /3GB switch to the boot.ini file so that Exchange can use all the available memory. Don't do this if you are running the Standard version. See http://www.microsoft.com/technet/prodtechnol/exchange/guides/E2k3AdminGuide/ff8eb7ca-fa16-4337-88dd-9ef28cd44c3e.mspx.
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  • KeithD1967
    Thanks for the info, Serendipity. Optimizing the Email server is ideal, and there are somethings that I did to help with the paging file. We are running the Standard version, so I'll have to skip your suggestions with regards to the /3GB switch. One observation: When making changes to the Realtime monitor to exclude directories as suggested by CA and MS, I forgot one thing: also add certain file extentions to the exclusion list within Realtime monitor! After doing that last night, I haven't experienced any slow-downs, nor the Event 26, Drive missing error messages within the last 24 hrs. So, I am in a wait-and-see mode and hope "nothing" happens. I wont hold my breath, though. :) Keith
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  • Smahaf
    Hi Just one thing on Exchange slowing down... maybe as you have stated your AV was causing the problem..... I had a very similar problem with very slow performance after applying Post SP3 service pack all is fine now. This problem occured on a number of our servers at different times. If you have not applied the Post SP3 service pack i would reccomend it... maybe after you have monitored your current changes and see how it goes. Find more info at the link below.. http://support.microsoft.com/default.aspx?scid=kb;en-us;813840 Thanks Steven
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  • KeithD1967
    Thanks for the reply, Steven. Your response has given me food for thought. We did apply Post SP3 for Exchange (813840) way back in June 2003. However, I had to uninstall the AV software on our Exchange server because I did a bone-head thing a couple of months ago - I installed a patch from CA to take our etrust AV 7.1 from version 192 to version 501. When the server started to act screwy, I uninstalled all of the anti-virus software, and reinstalled it, including the exchange agent. So, maybe I need to reinstall the 813840 fix? When the exchange server was acting slow, I tried stopping the Info Store service; which refused to stop. Almost like the Info Store was in a stalled state. Something is still bothering me, though. I seem to get this Application Popup error message about 1 - 1.5 hours before the Exchange slows down. It states: "store.exe - No Disk: There is no disk in the drive. Please insert a disk into drive A:" Event ID 26. I'm wondering if it has anything to do with our CA Brightstore backup. Any ideas anyone? Please! These 02:00 - 03:00am phone calls are starting to drive me insane; all due to sleep deprivation. Thank-God for caffine!
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