This is interesting. At first I thought Rob's intent was to just facilitate the blocking of that one ESP fully, but I see that he is trying hard here to avoid collateral damage and that's admirable. Good luck with this, Rob!
Cheers, Al Iverson On Fri, Aug 21, 2020 at 2:40 PM Rob McEwen via mailop <mailop@mailop.org> wrote: > > ANNOUNCEMENT: The NEW invaluement "Service Provider DNSBLs" - 1st one for > Sendgrid-spams! > > ...a collection of a new TYPE of DNSBL, with the FIRST of these having a > focus on Sendgrid-sent spams. AND - there is a FREE version of this - that > can be used NOW! (well... might need a SpamAssassin rule or two! Your help > appreciated!): > > INFO AND INSTRUCTIONS HERE: > > https://www.invaluement.com/serviceproviderdnsbl/ > > This provides a way to surgically block Sendgrid's WORST spammers, yet > without the massive collateral damage that would happen if blocking Sendgrid > domains and IP addresses. But we're NOT stopping at the phishes and viruses - > and we're not finished! There will be some well-deserved economic pain, that > puts the recipients' best interests at heart. Therefore, flagrant "cold > email" spamming to recipients who don't even know the sender - is also being > targeted - first with the absolute worst - and then progressing to other > offenders as we make adjustments in the coming weeks. > > -- > Rob McEwen > https://www.invaluement.com > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop -- Al Iverson // Wombatmail // Chicago Song a day! https://www.wombatmail.com Deliverability! https://spamresource.com And DNS Tools too! https://xnnd.com _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
