The designated journaling recipient for database '{3}' on server {2} points to an object that does not have a valid mailNickname. ...

The designated journaling recipient for database '{3}' on server {2} points to an object that does not have a valid mailNickname. This can cause messages to queue. Verify that object '{1}' is mailbox-enabled or use the Exchange System Manager tool to nominate a new recipient for archive messages.