The following error is shown in the mail target agent log file:
21.05.2012 11:32:17 CADQueue::NextItem Informational 4511 Starting to process item '/O=test/OU=NL_HH/cn=Recipients/cn=test' (Collection 'nL22-11', PST: '7E2DA5E9ED5972489E6E0FD6F5257FB4', SyncMailboxInfo: 'True', SyncSwitched: 'False', SyncAllContent: 'False', SyncFolderContent: 'False').
21.05.2012 11:32:18 EMWLDAP40::LDAPOperations::CreateMailboxLDAPInfo Error 5116 Invalid value of attribute 'msExchMailboxGUID'.
This error would normally occur when permissions are not inherited over the object in question as the value for the object in the target cannot be synchronized.
Ensure permissions are inherited over the object in question.
For more details on why inheritance may not be working see:https://support.quest.com/Search/SolutionDetail.aspx?id=SOL22213
For minimum permissions required see: https://support.quest.com/Search/SolutionDetail.aspx?id=SOL11575