"Marc G. Fournier" <scrappy(at)postgresql(dot)org> writes:
> On Sun, 1 Jan 2006, Tom Lane wrote:
>> ... I don't see a good
>> reason why we shouldn't let people use DNS names.
> Security?
Possibly, but if you're worried about that sort of attack you just don't
use DNS names in pg_hba.conf. Certainly it'd be worth putting a warning
in the manual about the risks of referring to DNS servers that aren't
directly under your control. But that doesn't seem like a reason not to
provide the feature for those who want it.
regards, tom lane