Klaus Ethgen via mailop skrev den 2023-06-18 18:53:
I have tighten my firewall a bit and seen many attacks from Microsoft (40.92.0.0/16). They contact once from a IP and then never again. If I greylist them, the will try to deliver from a different address which gets greylisted again and so on.
use greylist /32 for ipv4, and /64 for ipv6, with microsoft there is no ipv6 senders
maybe change greylist time to one single hour aswell, so urls is listed at accept time
Could you please tell me how to handle that broken mail delivery? It triggers all, my mailserver attack filter as well as greylisting.
change greylist to /32 for ipv4, i cant think of a better way to help microsoft servers :)
Unfortunately I have some contacts on hotmail. Otherwise I would not care about.
not news for me _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
