The following message is logged at ERROR level in the ZyLAB.EDiscovery.Exchange.Standalone.WinService.exe.log log file during Journal Synchronization phase of an Exchange Synchronization matter.
ERROR ZyLAB.EDiscovery.Exchange.Standalone.ExchangeSync.ExchangeSyncHelper - Item with IM id <INTERNET_MESSAGE_ID@Domain.com>, subject "SUBJECT_HERE" is skipped, as its sender/recipients are not configured to be trackable (Domain.com).
Synchronization for the reported domain(s) is not enabled for this mailbox. This message means that the mailbox(es) reported will not be Synchronized with Microsoft Exchange.
This is part of the normal process as only mailboxes within the domains specified in the TrackableDomains attribute will be synchronized during User Synchronization phase.
This means that the Exchange Synchronization matter will not attempt to synchronize the external recipients for instance.
Check the TrackableDomains attribute value of the relevant JournalMailbox key in the Mailboxes section of the ZyLAB.EDiscovery.Exchange.Standalone.WinService.exe.config configuration file.
It is possible to specify several domains separated by semicolon (';').
3.7; 3.7 Service Pack 1; 3.7 Service Pack 2