Hi,
we have some transport rules created on Exchange 2010 SP2 U4 that for each message sent to a specific mailbox the message is bcc'ed to some internal users. The rules work all fine, but we have a case were in some occasions a transport rule is not getting applied and the message is not delivered to the bcc users but only to the initial recipient mailbox. The transport rule in question has Priority "0" and we have no conflicting trasnport rules
Message tracking log is not so helpful since it just shows that the message delivered successfully, whereas in the case that the rule is being applied message tracking shows the message being deferred to the other recipients as well.
Unfortunately we were not able to reproduce the issue since it occurs in an ad-hoc basis therefore enabling pipeline tracing will not be of much help.
Please advise, what logging shall we enable on what level to be able to identify the cause and the location of the logs generated in each case (Event Viewer or C:\Program Files\Microsoft\Exchange Server\V14\Logging or C:\Program Files\Microsoft\Exchange Server\V14\TransportRoles\Logs).
Thank you very much in advance.