Please do NOT copy me when sending to the ASRG list.
The big difference is what is verified. DRIP verifies that
the DOMAIN used in the HELO/EHLO command is permitted from
the client IP address; RMX verifies that the DOMAIN used in
the envelope is permitted from the client IP address.
DRIP is more about reducing the amount of spewed payload from
virus infected systems than anything else.
DRIP and RMX compatible in that both can be used together.
Raymond S Brand
Yakov Shafranovich wrote:
At 01:21 PM 6/28/2003 -0400, Raymond S Brand wrote:
The June 24 DRIP document has a problem with the use of DNS
wildcard records. Attached is an updated DRIP document and
a diff of the important changes between the two documents.
[..]
The Designated Relays Inquiry Protocol, DRIP, is a method for domain
name owners to specify the IP addresses that are authorized to relay
mail as a domain name in the SMTP HELO and EHLO commands. The
protocol provides a method for server MTAs to reject SMTP connections
from IP addresses not authorized to use the domain name given in the
SMTP HELO and EHLO commands.
[..]
How is this proposal different from RMX proposal by Hadmut Danisch
(http://www.ietf.org/internet-drafts/draft-danisch-dns-rr-smtp-02.txt) and
the various other rDNS proposals (see Mike Rubel's page at
http://www.mikerubel.org/computers/rmx_records/).
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