On Nov 02, Darren Pilgrim <dar...@bluerosetech.com> wrote: > The problem is Google ignores the fact you must not hard fail on DNS. Even > if the response is NXDOMAIN, the most you can do is soft bounce because you > can not know why you didn't get an RR. Gmail hard bounces on such errors No, not really. If the response is NXDOMAIN then there is no rDNS.
> I get relay failure to gmail at least once every day. It is always the same > thing: gmail's server didn't get a response to the PTR lookup and 5xx'd the > mail. I've even seen mail to the same server succeed mere seconds later. > Google has an internal reliability problem and a policy that pushes the cost > out to those with no power to fix it. I think that you have a problem, not Google. -- ciao, Marco