VERY slow performance after installing IMAP4

I'm facing a dilemma and dont know what else I can do. I have a client running SBS 2003 with Exchange SP2 with 4GB RAM installed. The system is been running without ANY problems for the last 4 years.

My problem started ever since I enabled IMAP4 because the client decided to switch to MAC OS X 10.5 and no longer use MS Office but only use the MAC OS built-in apps (Mac Mail, iWorks).

Every time a Mac client connects to the server using IMAP4 the system was going to a TOTAL HALT this problem was fixed by following MS KB 823857, now the system HALT for a few seconds (15-30 sec) at times and either downloading emails takes hours and opening a downloaded email takes for ever.

I installed a process monitor to determine what app\service or process is freezing but as it freezes it will not show where it froze.

I though the problem was with the server and took a Mac to my office where I have a similar setup and it works fine. Please any help or ideas are welcome and GRATLY appreciated

Thanks
RudyM  
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rudym88Asked:
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
I find it interesting that KB823857 actually helped since this is not a front-end/back-end issue.  And especially since SBS's Exchange acts as both front-end and back-end.  However, if it did work somewhat, and you need it to work better, why not increase the buffer size?  What did you set it to?

But if it's the Mac, then I would ask how its communicating with the SBS?  See this article to make sure you've configured it's networking properly:  http://www.smallbizserver.net/Articles/tabid/266/articleType/ArticleView/ArticleID/234/PageID/357/Default.aspx

Jeff
TechSoEasy
0
rudym88Author Commented:
Hi Jeff,

Thanks for the reply, I will look into the link you provided.  I set the buffer size to "32K" it appears to be working OK but all hell breaks loss when multiple clients connect and try to send mails with attachments.

Thanks
Rudy
0
Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
Well, as I said, I wondered why that would have helped to begin with.  Connect the Mac per the instructions and you shouldn't have any problems.

Jeff
TechSoEasy
0
rudym88Author Commented:
Hi,

After running out of ideas i decided to archive any email older then a month and that took care of my problem. I guest the synching of the mailboxes was choking the network now all appears to be working find. Thanks for your help.

Thanks
Rudy


0

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