Mail PTR Records

[Peter Farrow]

Matt Kettler wrote:
> Glenn Steen wrote:
>> On 04/03/2008, Glenn Steen <glenn.steen at gmail.com> wrote:
>>> On 03/03/2008, Matt Kettler <mkettler at evi-inc.com> wrote:
>>>  > Nathan Olson wrote:
>>>  >  > It's not RFC-compliant.
>>>  >
>>>  >
>>>  > Please point out the RFC and section it violates.
>>>  >
>>>  >  AFAIK, there's no section that prohibits refusing mail due to 
>>> lack of PTR
>>>  >  records for the IP address.
>>>
>>> It might be that Nathan interpretes the "address verification" bit as
>>>  doing any form of DNS.... which actually might be the "spirit" of all
>>>  that.... Hm.... Need sleep and time to think on this:-)
>>>
>> Ah, I see you all thought this through while I was out carousing in
>> Copenhagen...
>
> Indeed, it boiled down to a mis-application of RFC 2821.
>
>>
>>>  >  I've been proved wrong before, but I'm extraordinarily skeptical 
>>> that there's
>>>  >  any such restrictions in the RFCs.. I can find no mention of 
>>> such a restriction
>>>  >  in RFC 821, 2821 or 1123.
>>>
>>> :-) You're a big man, Matt.
>> At some point in time, I think most people (like us:-) have had a ....
>> humbling.... "RFC incident":)
>
> I still prefer to think of myself as a bit of a child and not a "big 
> man" (I have a distinctly impish nature at times). However I am a 
> child that is reasonable and I generally learn well from past mistakes.
>
> I'm pretty much always willing to admit when I'm wrong or accept I 
> might be wrong, but I'll fight tooth and nail to prove out the facts 
> :-) How else will I ever find out the details and learn from them?
>
> So try not to confuse my tenacious pursuit of facts as a personal need 
> to be right... Generally I don't care if I'm right or not, I just need 
> to know what IS right, and I will fight to discover it. :-)
>
> (And I do greatly appreciate those who will indulge such pursuits...)
>
>
>
>
>
Just for the record, here is a deinition of "should" given to me today 
during a trade show:

"In the UK you *should* drive on the left, in the US and continental 
Europe you should *drive* on the right.  You can of course drive on the 
left or right on any road but in the wrong country the consequences 
could be rather significant."


Enjoy...