Re: [exim] message delivery deferred - destination mailserve…

Martin A. Brooks wrote:
> On Fri, June 11, 2010 09:00, W B Hacker wrote:
>> You will need, at the very least:
>>
>> - a valid and globally-published <domain>.<tld>
>
> Agreed,
>
>> - a fixed-IP on which to receive smtp traffic. Good isea to have a
>> fixed-IP from which to send. They may be the same. Or not.
>
> Certainly.
>
>> = a globally-published PTR RR associating (each of) said IP with the
>> <domain>.<tld>
>
>
> No, not required. He may have trouble delivering to paranoid mail servers
> without reverse DNS or with a reverse record that matches certain
> patterns, but that's not the same as being a requirement for the server to
> work.
>
>
>
>
>

*Yawn*

OP's problem isn't that his server doesn't 'work'

OP's problem is that he *could previously* deliver, and no longer can do.

Now even an obsessive-compulsive Merchant Banker might - just maybe -

... want to take his laptop on any connection WITHOUT a PTR RR and telnet smtp
to either of the two *specific* yahoo MX the OP listed as problematic.

.... and again from a server WITH a valid PTR RR.

Yahoo at one time passed around a billion zombot messages every day.

Now, bless their cotton socks - and connection vetting - they no longer do so.

You call that 'paranoid'?

I call it smart.

Bill