On 7/25/2017 8:48 PM, /dev/rob0 wrote:
I am curious, what kind of logic do you have to determine that a
spamming client might be a backscatterer? Are you talking about a
custom policy service, or a milter?
For the record, I can agree to disagree as I respect and understand your
position. I just choose to do it differently and think others should as
well.
But yes, I use a milter. I am a fanboy of MIMEDefang.
For example, in his case, I have a REDIS backend and would store message
IDs if I give a 5xx. Then if I see the same message id retried, you
could do the 2xx+silent discard.
Regards,
KAM
