How does Exchange/Outlook utilize the modify date? We just discovered that BackupExec looks at emails (during restore) via Modified Date - this info is collected from the message store. So when you want to restore emails using BackupExec GRT, the modified date is all you have and has no correlation with Received/Sent date. Under what circumstances does modified date change in outlook?

http://support.microsoft.com/kb/295657 The following actions change the modified date and time of the message: Forwarding Replying Replying to All Editing and Saving Moving or Copying Copying or moving the message to another message folder does not always change the modification date and time. If the destination folder is a personal folders (.pst) file, the modification date and time does not change. If the destination folder is a Microsoft Exchange Server mailbox or an offline folders (.ost) file, the modification date and time does change.

Thanks Andy What about Backups (ese) and SCR replcation?

That shouldnt change the modified date, but you'll have to ask BE support about that. Microsoft doesnt directly support mailbox level backups.

I did ask them, and they said it was a MS questions. Grrrrrr. I am backing up the edb. then backup exec reads the message store tables to disseminate the mailboxes/emails. Not doing brick level backups.

Andy has provided the list of the actions that can change the “Modified Date”. Basically, anything that changes the messages will cause the property to changeJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com