Just a note: draft-santos-smtpgrey suggests to tell the sender when to try again, e.g., 451 Greylisted, please try again in # seconds
Maybe something like that would be the right approach for this case too? You could announce the limits for the client in the greeting, e.g., 250-CONCURRENT-CONNECTIONS 10 250-RATE 5/minute or maybe in replies at some later stage. _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop