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postfix-users: Re: is this DNS setup RFC-correct ?

Re: is this DNS setup RFC-correct ?

From: mouss <mouss_at_nospam>
Date: Thu Oct 28 2010 - 20:10:49 GMT
To: postfix-users@postfix.org

Le 28/10/2010 21:40, Jeroen Geilman a écrit :
> On 10/28/2010 09:34 PM, mouss wrote:
>>
>> while many domains have an A record, this is related to the web, not
>> smtp.
>
> Um.
> You just finished stating that it is.
>
> If domain.com has an A record but no MX record, mail reception will
> work just fine for anything@something.domain.com - as long as
> something.domain.com is not delegated.
>
> The web is unrelated to a domain having an A record.
>

let me restate what I meant:

google.com, aol.com, microsoft.com, ... have A records, and this is not
because of smtp.

This may mislead some people to believe that every domain must have an A
record.