Multiple A Records - Followup Question

[Reindl Harald]

Am 02.10.2016 um 13:57 schrieb Tim Daneliuk:
> My earlier question was whether one host could have more than one
> A record.  But say, I want to to this as follows:
>
> test    A   1.2.3.4
> test    A   5.6.7.8
> test    A   9.10.11.12
>
> Is this legit?

surely - guess how dns-round-robin load balancing works :-)
https://en.wikipedia.org/wiki/Round-robin_DNS

> IOW, can a given *IP* appear in more than one A record? I realize
> that this does have the problem that the reverses would resolve to hostX not
> test

on IP should only have on PTR - period

avoid anything else than PTR/A-matching if the machine is supposed to 
send outbound mail