I was asked today to recover Outlook PST data from an Offline STorage file (OST).

These orphanaged files are remnants on Microsoft Exchnage Servers and when this is all you have something in the domain controller has gone awfully wrong.

I found this cool site about the problem :

we managed to "resurrect" a 2.6GB OST file !!!

this is the gem amazing Utlity :

Mail Recovery Pro

Here is the download link ->



(2MB)

more feedback as we have a similar issue again

"I Have successfully managed to convert an Outlook 2003 OST file to a PST file that can be read in Outlook 2002 or 2003. This is the method that worked for me:
1. Backup ost file(s)
2. Rename outlook.ost to outlook.pst
3. Use scanpst.exe from Outlook 2002 (in C:\Program Files\Common Files\System\Mapi\1033) to repair outlook.pst
(You can always copy scanpst.exe from an alternative installation, include MAPI32.DLL and GAPI32.DLL)
4. Rename outlook.pst back to outlook.ost
5. Run OST2PST which will then convert the file successfully to outlook.pst
6. Outlook can then open the outlook.pst file "

and a new version is out too

check this