Re: [exim] Default enabling of dnsdb

>
>
> > There may well be cute and clever things that only DNSDB enables.
> >
> > But DNSDB is *not* needed to test for a PTR RR.
>
> Checking for the presence of a PTR record, and looking for valid reverse
> DNS are not the same things.
>
> The reverse_host_lookup functions in Exim will fail if the
> forward-check also fails.
>
> If you only want to check for the presence of a PTR record, and do not
> care about the forward-check, I haven't been able to find any way to do it
> without using dnsdb.
>
>
>


Exactly. Often reverse DNS and forward DNS do not match and that does
ALWAYS mean its SPAM. If there is no reverse DNS at all I see no reason not
to defer though.

Matt