[AusNOG] bigpond mail problems?

[Karl Auer]

On Mon, 2016-11-07 at 10:44 +1100, Ross Wheeler wrote:
> Since sunday morning, my mailque has a significant number of messages
> sitting, waiting...  every one of them to bigpond.
> 
> Logs say:
> 
>     Name server: extmail.bigpond.com.: host name lookup failure

I have a client using smtp.telstrabusiness.com as a smarthost - and
he's seeing "451 4.4.0 DNS Query failure" in his Exchange server logs.
The server itself can resolve that address, though, so it's a bit of a
mystery.

My temporary solution was to switch the send connector config from
smarthost delivery to direct delivery via MX. Changing the various DNS
configurations (external DNS, hardcoded DNS etc) did not work. I have
not yet tried putting the IP address of the smarthost in place of the
name, that would probably work too.

Short of calling Telstra and hoping, I'm not sure I can do much else.

Regards, K.

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Karl Auer (kauer at biplane.com.au)
http://www.biplane.com.au/kauer
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