Re: [Asrg] Re: 6. Proposals: LMTP vs. rDNS / Reverse MX [RMX] proposals

["Mark E. Mallett" <mem@mv.mv.com>]

> Reverse MX proposition has been updated after this.
> 
> 4.3.2.1.in-addr.arpa IN PTR mail.company.dom.
> 4.3.2.1.in-addr.arpa IN MX 10 127.0.0.2
> 
> 127.0.0.2=Allow, 127.0.0.3=Deny

BTW (and I was guilty of this the other day too.. but didn't occur
to me until a little after posting): the target of an MX is a name,
not a number.  "127.0.0.2" can be used, but it doesn't mean an IP
address.  Perhaps some use could be made of the reverse MX pointer
indicating some legitimate name.

mm


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