[courier-users] Spam black hole?

This might be considered OT, but I figure this might be relevant in
relation to MTA/MX'es and spam control.

I learned recently that my employer's IT organization has decided it
best for the MX to process all mail as if it were successful even when
it's final disposition isn't. It neither returns 5xx (such as on bad
address) nor do the subsequent MTA's and MDA's generate DSN's. Is this
acceptable, or even suggested, practice? It's apparently generated a few
angry customers -- who think their emails are being ignored due to lack
of response -- but it also just seems wrong. I haven't reviewed the
RFCs, but I wonder if it might also be considered non-compliant.

I'm curious to hear what others are doing in this regard.

Bill


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