21 Aug
2002
21 Aug
'02
10 a.m.
what are the more basic problems you're trying to fix?
I'd like to be able to publish DNS records announcing my domain's *outbound* mail servers, with nice abbreviated forms to say "they're the same as my inbound (MX) records" or "any IP in x.y.z/24". Then cooperative ISPs (like say America Online) could refuse any email from my domain that originated from some random cable modem, instead of accepting it and then flooding me with 20000 bounce messages.
Spam?
Yeh, but it would also help with things like KLEZ.