> On 19.02.2024 at 17:15 Michael Peddemors via mailop wrote: > > On 2024-02-19 04:46, Gellner, Oliver via mailop wrote: >>> On 16.02.2024 at 03:38 Matt Palmer via mailop wrote: >>> Although I must say that >>>> without reverse DNS >>> would seem to be the easier blocking option -- when was the last time you >>> saw legitimate mail from an IP without rDNS? >> Unfortunately every day. It's true that 99% of legitimate senders have a >> fully confirmed reverse DNS, but it's the same as with DMARC, TLS and other >> technologies and best practices: To make it a requirement and >> unconditionally block all messages from the remaining 1%, the big email >> services providers need to make the first step in a coordinated procedure. >> Otherwise the sender is unlikely going to fix his setup and rather blame the >> receiver, because obviously he can deliver his emails everywhere, just not >> to our place. > > Some of the big guys have been rejecting for a long time.. I think Yahoo was > one of the first big guys to reject connections from IPs with no PTR..
Really? I wasn’t aware that Yahoo was rejecting connections from senders without a FCRDNS in the past, ie before 2024. At least it was not mentioned as a requirement on their postmaster page. Google and Microsoft for sure didn’t have such a requirement. — BR Oliver ________________________________ dmTECH GmbH Am dm-Platz 1, 76227 Karlsruhe * Postfach 10 02 34, 76232 Karlsruhe Telefon 0721 5592-2500 Telefax 0721 5592-2777 [email protected]<mailto:[email protected]> * www.dmTECH.de<http://www.dmtech.de> GmbH: Sitz Karlsruhe, Registergericht Mannheim, HRB 104927 Geschäftsführer: Christoph Werner, Martin Dallmeier, Roman Melcher ________________________________ Datenschutzrechtliche Informationen Wenn Sie mit uns in Kontakt treten, beispielsweise wenn Sie an unser ServiceCenter Fragen haben, bei uns einkaufen oder unser dialogicum in Karlsruhe besuchen, mit uns in einer geschäftlichen Verbindung stehen oder sich bei uns bewerben, verarbeiten wir personenbezogene Daten. Informationen unter anderem zu den konkreten Datenverarbeitungen, Löschfristen, Ihren Rechten sowie die Kontaktdaten unserer Datenschutzbeauftragten finden Sie hier<https://www.dm.de/datenschutzerklaerung-kommunikation-mit-externen-493832>. _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
