Saturday, December 06, 2003

Reverse MX Proposals

Checking up on reverse MX proposals to see where they're at in the approval process: (prior mentions: Aug 21 2003, Oct 2 2003)

As I said before, the concept of reverse-MX is pretty simple. It allows a destination SMTP server to find out whether an e-mail message from a particular domain came from an authorized IP address. (e.g. all e-mail for a corporate domain can be forced to route through a specific corporate SMTP server so that the content can be checked for viruses or encrypted) Any reverse MX proposal answers (2) questions: (a) does domain X have a list of authorized outbound mail server IP addresses? (b) is IP address "Y" on that list?

RMX proposal (Mike Rubel's page) - Last published draft (Oct 2003).

DMP - No change or update since this was posted back in August 2003.

DRIP - Published July 2003 by Raymond S Brand and Laurence Sherzer.

SMTP+SPF - Last updated Dec 1 2003. Last RFC draft is Oct 2003.

Really though, not much has happened in the last 3 months. I've heard rumors that ASRG and the IETF formed a sub-group to work on the issue... but I don't expect to see anything until 2005 at this rate (at which point I'll be getting 1000 spams per day).

Labels: Spam

posted by Wuphon's at 1:46 PM