Re: [Exim] v6

>>> looks like ph10's guess was correct, the A is being returned before the
>>> AAAA. i suspect my v6 friends would ask that AAAA be preferred even if
>>> it is not first.
>> I presume you mean in the case
>> MX -> name -> two IP addresses, one v4 and one v6
>> but not in the case
>> MX -> two names, one has A and one has AAAA
>> where of course the MX preferences will determine the order.
>or when there is no mx, and only one or more AAAAs and one or more As.
>or when the MX pointing to the AAAA has the same cost as one
>pointing to the A.

    btw, there's an i-d that describe all this detail.
    draft-ietf-ngtrans-ipv6-smtp-requirement-05.txt

itojun