Hi, I have been having issues with out ISPs email gateway being blacklisted and have opted to 'Use DNS to route each address space on this connector" on the default SMTP connector.
When I use this option the outbound queues backup with garbage and I have to use AQADMCLI to flush them. I fear these will cause a blacklisting against my IP address.
I am firewalled and don't thing they originate outside, so that leaves inside PCs acting as bots?
How can I use Exchange or other tools to determine where these messages originate?