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Exchange 2003 to 2010 migration - mailbox corruption

Posted on 2011-03-21
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Last Modified: 2012-08-14
Started an Exchange migration from 2003 to 2010.  When we started to move the mailboxes we found many of them failing to move because of errors.  In some cases there are thousands of messages that are showing as corrupted.  We can go into the users maibox and see the corrupt items, we can open them and we can even forward them.  If we forward a corrupt message, it appears to be intact and accessible.  We cannot copy or move the corrupt messages to a new folder.  We cannot export them to a .pst file.  Exmerge will not handle the corrupt messages.  We looked at the databases with Ontrack's Exchange recovery tool and it will not allow us to move the corrupt messages to a .pst file either.  We setup a rule to forward the corrupt messages, but this is only partially successful.  Some of the messages will forward while others will not.  We haven't found a pattern to what will and won't forward.  Again, we can open all of the messages and even open attachments in the message.  There are so many messages flagged as corrupt, it would not be practical to try and move them manually.  The Exchange databases are coming up clean using isinteg.  We have done a defrag as well.  There are numerous applications out there that claim to perform Exchange recovery, but none that specifically talk about corrupt messages.  Has anyone seen anything like this before or has anyone tried any of these utilities with success?

Thanks

David
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Question by:comnet_nm
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by:GridLock137
ID: 35181807
you can try this tool on the local machine:

http://www.recoverytoolbox.com/outlook.html

i've used it plenty of time and it has worked in recovering corrupted files that are either PST or OST. although, i don't think the issue you are having is related to that, the migration process has a step if i can remember correctly where you set the amount of corrupted items to be skipped if found during the migration. you have to set that number to some astronomical number, like 1000 and it will avoid picking up so-called corrupted items which i think are false-positives.
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by:Shibu Kuttan
ID: 35181895
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by:comnet_nm
ID: 35430343
The local ost files are not reflecting the messages marked as corrupt, so we can't recover them from there.

Checked all of the links referenced above, but they don't apply in our situation.  I can't abondon the thousands of messages marked as corrupt in these mailboxes.  I need something that will let me get at these messages and move them to a .pst or another mailstore.  Looking at Digiscope now.  I'll let you know if it works.
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comnet_nm earned 0 total points
ID: 35692151
Digiscope from Lucid8 was able to open the information stores offline and export out all of the corrupted messages into .pst files.
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by:comnet_nm
ID: 35718459
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