comcast ipv6 PTR

Tue Oct 15 20:25:01 UTC 2013

On Oct 15, 2013, at 2:55 PM, Chris Adams <cma at cmadams.net> wrote:

> Once upon a time, Barry Shein <bzs at world.std.com> said:
>> 
>> On October 15, 2013 at 03:31 johnl at iecc.com (John Levine) wrote:
>>>> it's a lot of work for example.com to return something like:
>>>> 
>>>>  2001-0db8-85a3-0042-1000-8a2e-0370-7334.example.com
>>> 
>>> Add some NSEC3 records and, yeah, it's a lot of work.  And for what?
>> 
>> Many mail servers require it as a minimum standard for speaking to
>> their MTA.
> 
> Random end users shouldn't be talking to MTAs.  They should be using
> MSAs instead.
> -- 
> Chris Adams <cma at cmadams.net>
> 

Semantically confusing --

From wooledge.org:

Mail Submission Agent (MSA): a relatively new term in the e-mail field. 

This is the component of an MTA which accepts new mail messages from an MUA, using SMTP.
            ====================