When an Exchange Information Store (IS) backup is performed with Backup Exec 11.0 utilizing the Granular Restore Technology (GRT), and the backup job is written to tape, some Exchange Mailboxes may not appear in the (granular) restore selections. This is specifically caused by a difference between the Mailboxes Active Directory mail attribute (initial SMTP address) and the objects LegacyExchangeDN attributes final cn= value.
When configuring job properties for an Exchange Information Store backup to tape with the setting for "Enable the restore of individual mail messages and folders from Information Store backups" checked (enabled), some Exchange Mailboxes may not show up in the restore selections for that job.
This is due to a difference between those Mailboxes Active Directory mail attribute (initial SMTP address) and the LegacyExchangeDN attribute’s final cn= value.
When a mailbox is created for an Active Directory user the alias provided forms the basis for three Active Directory attributes:
- 1. mailNickname attribute is the actual alias provided
2. mailattribute is the initial SMTP address generated when the user first logs into their mailbox, this is in the syntax of firstname.lastname@example.org
3. LegacyExchangeDNis in the syntax of /o=First Organization/ou=First Administrative Group/cn=Recipients/cn=alias.
In order for Backup Exec 11.0 GRT technology to correctly display the mailbox in the restore selections following a GRT enabled backup of the Exchange IS, the users name in the mail attribute (initial SMTP address) and the final cn= in the LegacyExchangeDN attribute must be the same.
Note, additional SMTP addresses can be created for a user and may be different from the initial default alias since they do not also populate the mail attribute in Active Directory.
The above information is provided strictly for the purposes of education and as a possible workaround but is not intended to represent the final functional state of the Backup Exec 11.0 Exchange GRT feature.
NOTE: Individual Public Folder data will not show up in restore selections following an Exchange IS backup if the backup set is initially written to anything other than a backup-to-disk folder (e.g., backup to tape). The same data duplicated from backup to disk to tape will create granular restore selections for the Mailbox and Public Folder data.
If this problem occurs, and modifying user properties in Active Directory is not an option, please refer to the related documents section of this article to learn more about using the Recovery Storage Group feature in Exchange 2003 server where applicable.
Symantec Corporation has acknowledged that the above-mentioned issue is present in the current version(s) of the product(s) mentioned at the end of this article. Symantec Corporation is committed to product quality and satisfied customers.
Symantec Corporation currently plans to address this issue by way of a patch or hotfix to the current version of the software. Please be sure to refer back to this document periodically as any changes to the status of the issue will be reflected here. A link to the patch or hotfix download will be added to this document when it becomes available. Please note that Symantec Corporation reserves the right to remove any fix from the targeted release if it does not pass quality assurance tests. Symantec’s plans are subject to change and any action taken by you based on the above information or your reliance upon the above information is made at your own risk.