Hallam-Baker, Phillip wrote:
The domain owner can let the receiver know that specific
fields are to
or not to be relied on for MARID checking. For example, if the domain
owner sends mail with correct 2821 MAIL FROM but uses all kinds of
values for 2822 From header, he wants the ability to let the receiver
know that only 2821 data is to be relied on and not 2822 data.
No he does not, it does not work.
Sender uses the following domains
2821: Useless.com
2822: Bonkers.com
2822: Hopeless.com
2822: TotalFailure.com
Where do you say 'ignore the 2822 data'?
Useless.com - this allows a spammer to disable all 2822 checking at his
option, that is so not happening.
Bonkers.com? If you don't want to have it checked then don't define a MARID
record, or point the MARID record to Useless.com.
Good point, I guess the only two cases this would matter in is
forwarders and mailing lists where the domain does not want to set the
"from" header. However, in those cases, a "Sender" header or some other
scheme would be needed.
Yakov
-------
Yakov Shafranovich / asrg <at> shaftek.org
SolidMatrix Technologies, Inc. / research <at> solidmatrix.com
"Some lies are easier to believe than the truth" (Dune)
-------