On Mar 20, 2004, at 21:48, Ted Cooper wrote:
> Wasn't there another option that was similar to SPF but infinitely
> better? I can remember it being mentioned on the list but I can't find
> it (something about not knowing what I'm looking for). It also used DNS
> entries but had a much more simplistic setup and solved the forwarding
> problem.
Several:
- RMX - "Reverse MX records". Essentially, DNS records for your
domain with values corresponding to the hosts that were certified
sending hosts for that domain:
yourdomain. IN RMX host:youroutgoingsmtphost.yourdomain.
yourdomain. IN RMX ipv4:10.0.0.0/8
- "MAIL-FROM" MX records, essentially the same idea:
MAIL-FROM IN MX 0 youroutgoingmailhost.yourdomain.
The nice thing about standards is that there are so many to choose from.
-tor
