On Sat, 2023-06-24 at 08:42 +0000, Andy Smith via mailop wrote: > > In the specific case at hand it seems that the OP is greylisting > SendGrid for being on some sort of blocklist, and the specific > mention of "blacklist" in the 4xx response is hitting a SendGrid > heuristic that says "don't bother to retry these", so messages are > actually being lost. I think it has implications beyond greylisting. >
We're not greylisting them for being on a blacklist, they'd just get rejected in that case. The blacklist text is there for the people who get a 5xx reject. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
