.ost to .pst

Networking/Security Forums -> Exchange 2000 // 2003 // 2007 & Active Directory

Author: Bannerd PostPosted: Mon Sep 19, 2005 8:49 pm    Post subject: .ost to .pst
Hello, is there anyway to convert a .ost to .pst? I surf google and tried many applications, recovery for exchange 2.0 work...but it only does a certain amount of emails. I need to convert them all. Are there any free programs out there that will convert?



Author: AdamVLocation: Leeds, UK PostPosted: Tue Sep 20, 2005 10:00 am    Post subject:
if the .ost files belong to current users (so they are not "orphaned") then they should only be replicas of what is in exchange
you could use exmerge to get the data out of Exchange into a pst file per user.

or am I missing something?

Author: Bannerd PostPosted: Tue Sep 20, 2005 1:16 pm    Post subject:
Hey Eliza,

Basically the exchange server had over 1200 bugs in it and was getting hammered. I don't really have exchange at my finger tips. But since the exchange server is down, many of the people that were connected to it still have the .ost file. Basically I need to convert that, or some how load that into outlook 2003 and possible send the mail they need to their inbox? Right now we run a pop3 server on freebsd, I would like to install @mail in the near future and get everyone off outlook and make email striclty webmail. It's about 4,000 for the application itself, then again, long term plans.

So I guess i'm looking for a application, I could setup exchange 2000 I suppose and give it a try.


Author: AdamVLocation: Leeds, UK PostPosted: Tue Sep 20, 2005 2:33 pm    Post subject:
something along these lines:
disconnect machine from LAn
log on using cached creds
open outlook (should use ost without difficulty)
file > export > export to a file > pst file
give it a sensible name etc. (I would advise something like user-mail.pst, not outlook.pst as the default - this way you can copy them around, back them up etc without losing track of which is whose)

If you want to use a pst as the main storage for their email, that's under tools > email accounts > add a directory. You will need to fiddle to get it to be the default.

then set up POP or whatever as your temporary solution to get mail to them

does that make sense?

(I know it wuld be a real PITA for many users, but if you think Exchange is seriously dead this might be a way out)

Author: Bannerd PostPosted: Tue Sep 20, 2005 4:47 pm    Post subject:
HAHA, yes, exchange is seriously dead, we no longer use it, I use freebsd running postfix. Just exchange left alot of mailboxs behind (.ost). Everyone wants there mail ( I hate when people use their mail, they never delete it).

Basically I will setup a trial version of windows 2000 server and exchange 2000 Hopefully I can convert .ost to .pst using the tool you addressed.

Thanks Eliza.

Author: AdamVLocation: Leeds, UK PostPosted: Tue Sep 20, 2005 6:54 pm    Post subject:
interestingly, one of the google ads under this thread reads:

"recover .ost files
Convert orphaned .ost to .pst files service"


Offered as a service but they link to a software solution as well (I haven't followed any further)

since the ost files are tied to users in exchange / AD I'm not sure how you would go about do ing this with a fresh installation.

surely it must be documented somewhere by MS? I'll have a rummage around.

Author: graycatLocation: London, UK PostPosted: Wed Jul 20, 2011 10:29 am    Post subject:
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Many thanks and keep posting! Smile

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