Re: What is the history of 2821 and implict MX?

[John C Klensin]

--On Wednesday, 09 April, 2008 17:21 -0400 "Robert A. Rosenberg"
<[EMAIL PROTECTED]> wrote:

> 
> At 14:29 -0500 on 04/08/2008, Pete Resnick wrote about Re:
> What is the history of 2821 and implict MX?:
> 
>> The MX rule of 974 is perfectly reasonable to apply to IPv4
>> and IPv6.
> 
> 
> RFC 974 also requires the use of a WKS record to verify that
> the IPN address has a MTA running on it.

Please read RFC 1123 (section numbers mentioned in an earlier
note).  Use of WKS was explicitly deprecated; the MX rule was
not changed.

    john