After performing an installation of Symantec Mail Security for Microsoft Exchange (SMSMSE) 7.5.6 you are unable to release messages from Quarantine that have the recipient field specified as "Unknown Recipient". All newly quarantined messages show a typical recipient value and can be released.
When attempting to release messages with "Unknown Recipient" the following error is returned.
Back-end functionality for the Quarantine feature was changed with the release of SMSMSE 7.5.6. The resulting changes introduced a new issue.
We have created a hotfix to address this issue. Utilize the following steps to apply the hotfix:
Once the hotfix is applied all quarantined items previously showing "Unknown Recipient" should now display the original recipient.