[ExchangeList] Re: convert from pop3 to exchange

  • From: <ChongJa@xxxxxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Sun, 26 Mar 2006 18:03:59 -0500

Here you go Mark. I've actually seen this with serveral users who were somewhat 
over 1gb. But again it could be a combination of factors with large ost files 
being one of them.

Managing performance issues

Many factors influence a user's perception of Cached Exchange Mode performance, 
including how much hard disk space and how fast a CPU the user has on his 
computer, and what level of performance the user is accustomed to when using 
Outlook. For example, offline users might experience Cached Exchange Mode as 
providing a better user experience, while users who formerly accessed Exchange 
in online mode might perceive Outlook performance as having decreased 
(depending on other factors as well).

One factor that can contribute to reduced performance is a large OST file. If 
the user's OST file grows too large (for example, larger than 1 GB), Outlook 
with Cached Exchange Mode performance degrades. To improve response time in 
Outlook, users should either reduce the size of their mailbox (for example, by 
archiving older files) or turn off Cached Exchange Mode. To help prevent the 
problem of overly large OST files, you can set a limit on the mailbox size in 
Exchange Server. You might also choose to turn off synchronizing users' Public 
Folder Favorites if you previously enabled the option in your deployment of 
Cached Exchange Mode.


From: exchangelist-bounce@xxxxxxxxxxxxx on behalf of Mark Fugatt
Sent: Sun 3/26/2006 3:43 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: convert from pop3 to exchange

Not sure about Cache mode degrading at greater than 1Gb, do you have any 
documentation about this?


Mark Fugatt 
Dedicated Supportability Engineer (Exchange) 
Microsoft Limited
Desk:   +44 (0)118 909 5630
Mobile: +44 (0)7966 858108
MSN IM: markfu@xxxxxxxxxxxxxxxxx
Blog: http://blogs.technet.com/mfugatt

Dedicated to proactively supporting Microsoft's enterprise Customers

If you have any feedback about my work, please let either myself or my manager 
Andy Gitsham know at andygi@xxxxxxxxxxxxx 
  or telephone +44 118 909 3233




From: exchangelist-bounce@xxxxxxxxxxxxx 
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of ChongJa@xxxxxxxxxxxxxxxx
Sent: 26 March 2006 20:50
To: exchangelist@xxxxxxxxxxxxx
Subject: RE: [ExchangeList] convert from pop3 to exchange


I don't think there's really anything that can facilitate this process. Yes, 
when these users enable cached mode, they are essentially going to download all 
their mail into an .ost file. Now you would have to have your users copy the 
contents of their .pst file to their mailbox so they can have access to it for 
webmail for example. However, keep in mind that if your users have more than 
1GB of mail in their .pst and they wish to import that into their mailbox using 
cached mode, client performance will degrade as cached mode works optimally at 
less than 1GB. 



From: exchangelist-bounce@xxxxxxxxxxxxx on behalf of Harondel J. Sibble
Sent: Sun 3/26/2006 2:39 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] convert from pop3 to exchange

-------------------------------------------------------Okay, have a client 
running exchange 2003 at west coast location, we have
several users in Central Canada who have been connecting via pop3s and smtps.
These users were running Outlook 2000 and have recently been upgraded to
outlook 2003 so their pst files are still of the older non-unicode variety.

Now I've sent these staff the information to get them connecting to the
exchange server via vpn (can't run rpc over https as the dc is still win2k)
and I need to figure out the best way to migrate them.

Essentially I want to have them use Exchange Cached mode and continue to use
the same pst file they currently use (after creating a unicode one and
copying the contents to it).

What's the best way of going about this?

Essentially I don't want to have the caching re-download all the mail that
they already downloaded via pop3. Is this even possible?

Harondel J. Sibble
Sibble Computer Consulting
Creating solutions for the small business and home computer user.
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