On Tue, 29 Jun 2004, Matthew Elvey wrote:
Here's an example: there is no MTA that does a HELO elvey.com. Mail from
users at elvey.com is sent through (among others) rr.com and fastmail.fm.
rr.com and fastmail.fm will have to publish CSV records, but elvey.com won't.
You would probably want to populate your zone with negative CSV records to
ensure that all hosts are explicitly unauthorized to use your domain,
rather than neither authorized not unauthorized.
Tony.
--
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SOUTHEAST FITZROY: NORTH OR NORTHWEST 4 OR 5, OCCASIONALLY 6 IN EAST. FAIR.
MAINLY GOOD.