Heads up to everyone, but a draft of a specification for an IMX
(Internal Mail eXchanger) record was published today:
http://www.ietf.org/internet-drafts/draft-laforet-deasey-imxrecords-00.
txt
The idea is that mail should only be accepted from mail exchangers, and
adding a new RRtype for internal-only exchangers should facilitate this.
I'm not sure what I think, but it's related, so I thought I'd say
something.
Ari
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