Re: [ietf-smtp] EHLO domain validation requirement in RFC 5321

[Keith Moore <[e-mail]>]

On 10/4/20 2:35 PM, Dave Crocker wrote:

> On 10/4/2020 11:28 AM, Keith Moore wrote:
>> On 10/4/20 2:19 PM, Dave Crocker wrote:
>> It's easy to find documentation about how highways are engineered to 
>> permit safe operation at certain speeds (slightly greater than 
>> statutory speed limits), also taking into account road conditions, 
>> traffic volume, etc.   The "expectation" you refer to is not merely 
>> an informal convention, it's a result of explicit design.
>
> Actually, it has little or nothing to do with road engineering. 
> Objectively, in fact, anything over about 55 mph is extremely unsafe, 
> given typical human reaction behaviors, at the list.
>
> So this is primarily a matter of operating convention by the folk who 
> police the roads.  Unwritten but highly reliable.  Except when it isn't.

Whatever.  I found reliable sources that stated otherwise.   But this 
just illustrates that jumping through hoops that you hold up is pointless.


Keith