Yes, that should be matches for the Transport rule agent. You should be able to verify/check this against the output of Get-MailDetailTransportRuleReport or
Get-MailTrafficReport -EventType TransportRuleMessages
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Viewing the mailflow status report I have noticed "Rule messages" (picture).
What does it refer to?
There are no rules (transport rules) configured.
Could it be referred to "connection filtering"?
Yes, that should be matches for the Transport rule agent. You should be able to verify/check this against the output of Get-MailDetailTransportRuleReport or
Get-MailTrafficReport -EventType TransportRuleMessages
I am going to check.
I was wondering: we didn't create any rules (mailflow-rules) so why the EOP is filterning email by Transport Rule?
Thanks