On 02/11, Henrik K wrote: > What a complex scheme you invented for a simple problem. All you have to do > is to require legimate relays to have a FCrDNS entry with an actually > identifiable name, like starting with "smtp". Much simpler to take advantage > of that and it actually is somewhat used today.
I did consider this, but I didn't think it was reasonable to expect people to change the host names of their transmitting mail servers. MTX has the advantage of only listing mail servers that transmit legitimately, not including servers that only receive, although it might be a distinction worth losing in exchange for increased adoption. I encourage you to get your method standardized. It might work better. In the mean time, I think mine has a better chance of adoption because there is no reason not to create the records. Perhaps I should consider ".smtp." in a hostname a "pass" for MTX? I'd prefer not to use that particular string since it's associated with receiving servers more than transmitting. I'd be tempted to do ".mtx.", except I'm concerned about administrators unaware of it allowing spammers to have hostnames including it. Same for ".smtp.", actually. I like the separate MTX record because it's very explicit identification of a legitimate transmitting mail server. -- "When in doubt, gas it. It may not solve the problem, But it ends the suspense." - Steve Moonitz, DoD #2319, 1994 http://www.ChaosReigns.com
