On Tue January 8 2008 13:30:22 John Hasler wrote: > Mike Bird writes: > > No, I checked headers during the flood. Debian was forwarding spam > > directly received from hosts with PTR records without matching A records. > > That just means it doesn't use your favorite method (because many ISPs have > broken DNS).
Hmm, I'm postmaster and maintainer for quite a lot of Linux mail servers, mostly Debian/Postfix and some Fedora/QMail. Several years ago when we started enforcing consistent rDNS we'd get about one complaint per month related to ISPs with broken rDNS. I don't think we had any such complaints in 2007. If in 2008 Debian is not enforcing rDNS consistency checks at SMTP-connect time then Debian is doing a poor job of blocking spam. Worse - Debian is unnecessarily relaying millions of spams per day. Once relayed, those spams become much harder to block. Please reconsider. --Mike Bird -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
