At 03:31 PM 6/22/2005 +0000, John Levine wrote:
Here is a quick survey of how some of the larger email domains set up their
MX records. Assuming they would want to set up their *mailout* records in
a similar fashion, ...
That's a poor assumption. As I think we've mentioned several times
recently, CSV records are designed to identify client hosts, not
domains, and a normal setup would be to have a CSV record per mail
client.
There seems to be a delay in posting to the list. Our messages are getting
out of sync.
I think the earlier discussion you refer to was on putting all the IP
addresses for an entire domain in one record. The current suggestion is
putting just a few addresses under one record. That could get most of the
benefit (better caching) without getting too far from what I assume is your
goal, keeping control of the authentication records "local" to the sending
domain.
I realize that all of hotmail's servers lie and say "HELO hotmail.com"
but I don't think it's a good idea to design around one bogus point,
even if it's a large one.
If a significant number of domains do this, can you get them to change, or
will they just ignore CSV and use SenderID? I wouldn't compromise an
important principle, but it may be that a sensible compromise wouldn't hurt
the principle, and could gain a lot more acceptance.
--
Dave
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