After setting the config key "Directory Connector Scan O365 Mailbox From On Premises" = "True" in the config console the Active Directory connector fails to add any O365 mailboxes.
On inspecting the log the following error is seen:
2018-08-06 13:32:17,121 [7] INFO ADC Engine - Entering GetOnPremisesMigratedO365MailBoxesFromForest(forestServerName = 'LDAP://dc.domain.corp:389', forestUserName = 'null', forestPassword = '***', forestOuNamingContext = 'dc=domain,dc=corp', useSsl = 'False', forestMailBoxFilter = 'objectClass=*')
2018-08-06 13:32:17,121 [7] FATAL ADCService - {{c282ca99-702b-47b7-8fe5-2586a7284422}} Fatal error in ActiveDirectoryConnector.Synchronize();
System.Runtime.InteropServices.COMException (0x80005000): Unknown error (0x80005000)
at System.DirectoryServices.DirectoryEntry.Bind(Boolean throwIfFail)
at System.DirectoryServices.DirectoryEntry.Bind()
at System.DirectoryServices.DirectoryEntry.get_AdsObject()
at System.DirectoryServices.DirectorySearcher.FindAll(Boolean findMoreThanOne)
at Quest.AM.DirectoryServices.Wrappers.VDirectorySearcher.FindAll()
at Quest.AM.DirectoryServices.Ldap.LdapDomain.FindObjects(String container, ObjectType objectType, Boolean recursive, Int32 maxCount, Boolean tombstones, Func`2 filterCallback)
at Quest.AM.DirectoryServices.Providers.ActiveDirectoryProvider.ActiveDirectoryDomain.FindObjects(String containerDN, ObjectType objectType, Boolean recursive, Int32 maxCount)
at Quest.AM.Service.ActiveDirectoryConnectorService.ActiveDirectoryConnector.GetOnPremisesMigratedO365MailBoxesFromForest(String forestServerName, String forestUserName, String forestPassword, String forestOuNamingContext, Boolean useSsl, String forestMailBoxFilter)
at Quest.AM.Service.ActiveDirectoryConnectorService.ActiveDirectoryConnector.GetOnPremisesMigratedO365Mailboxes()
at Quest.AM.Service.ActiveDirectoryConnectorService.ActiveDirectoryConnector.SynchronizeSingle(String ou)
at Quest.AM.Service.ActiveDirectoryConnectorService.ActiveDirectoryConnector.Synchronize(LoginGroup loginGroupBulkInserter)
at Quest.AM.Service.ActiveDirectoryConnectorService.ADCService.Synchronize(Boolean logOnly)
