The built in engine is being identified as an MTA by other systems trying to dynamically sent SMTP messages.
I have an SMTP relay server, so the built-in one in PRTG isn't necessary, and when it rejects other systems from using it's built in engine as an SMTP relay, errors on those other systems are generated.
Since the monitoring system doesn't need it's own SMTP engine running, is there a way to disable the built in one, so other systems don't try sending their mail through it?
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