When backing up single mailboxes, Backup Exec reports some of the messages with attachments as corrupt. The file attachments can be checked out not to be corrupt, i.e. they can be opened, viewed and executed.
Following guidelines will be useful to resolve this issue:
1) Anti-virus software accessing the Information Store at the same time as the backup, i.e. using the same Messaging API as Backup Exec does- It is recommended to stop Anti-virus software services when backing up. We suggest you to delete the mailbox with the subject line "Happy Birthday"
2) Multiple levels of embedded mail messages (A message attached to a message etc.)- Remove this message.
3) Automated system messages (undeliverable, over size limit etc.)- Remove this message.
4) The message / attachment is really corrupt (can't open, view or execute) â Remove this message.
5) Virus infected Information store - Remove virus.
6) Very long subject lines - Remove this message.
7) Very long attachment names -Remove this message.
8) Very large attachments (might give out of resource like errors) - Remove this message.
9) Check the name of the mailbox (which gives error "is a corrupt file") in job log and download all the mails of that mailbox to personal folder file (.pst)
To remove the corrupt mailboxes you could also go to the View format and select Text view in the Backup job properties and then delete the unwanted mailboxes.
To resolve this error please refer to the following technote::
A backup operation fails with the error message: "Directory not found. Can not back up directory <\directory> and its subdirectories" or "The directory is invalid."
http://seer.support.veritas.com/docs/207001.htm
IF THIS ISSUE IS RELATED TO THE EXCHANGE MAILBOX: Please refer below:
When the issue is seen specific to mailbox backups, refer to the following details:
This issue occurs due to the fact that when deleting users inside Active Directory, the associated mailboxes in Exchange are kept for a period of time. This time is called a Retention Period. By default the retention period is 30 days. This is so that in the case that this user's mail has to be retrieved, it will be available for a period of time.
Backup Exec will see the mailboxes that have had the associated user accounts deleted from Active Directory, but will be unable to access them.
There are four possible options to resolve this error:
1. The first option is to change the retention period that mailboxes are kept.
2. The second option is to remove the mailbox from Exchange all together.
3. The Third option is to associate the mailbox with another user inside Active Directory. This option is only available, if the new user does not have an associated mailbox inside Exchange.
4. The Fourth option is to deselect the mailbox for backup inside the Backup Exec backup job operation Selection List.
For details on how to implement the above solutions, please refer to the following technote:
http://seer.support.veritas.com/docs/241981.htm