[AusNOG] bigpond mail problems?

[James Gray]

Same here. I have some customers using either "mail.bigpond.com" and "
smtp.telstra.com" on retail and TID tails; all getting the same result.
Unable to relay mail via Telstra's SMTP servers. Postfix is claiming "Host
or domain name not found. Name service error for name=smtp.telstra.com
type=MX: Host not found, try again" but doing a manual session to "
smtp.telstra.com" from a TID service works fine (both unencrypted TCP/25
and encrypted TCP/465).

Currently no work-around and I can't really see anything amiss in DNS
either. Anyone from Telstra's mail team floating around?

Cheers,

James

On 7 November 2016 at 15:32, paul+ausnog at oxygennetworks.com.au <
paul+ausnog at oxygennetworks.com.au> wrote:

> Anybody know if there are any updates on this one ? we have a customer who
> has their smart host set to mail.bigpond.com and it's getting timeouts,
> but I can't find any documented issue anywhere on a fault, changing to
> deliver directly resolves the issue straight away, except for emails to
> bigpond :-)
>
> Regards
> Paul
>
> -----Original Message-----
> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Phil
> Memery
> Sent: Monday, 7 November 2016 11:17 AM
> To: Karl Auer
> Cc: ausnog at lists.ausnog.net
> Subject: Re: [AusNOG] bigpond mail problems?
>
> Hmmm the very same circle of pain as the one I have.
>
> The PBL list stuff was noticeable after I dropped smtp.telstrabusiness.com
> from the postfix config.
>
> ----- Original Message -----
> From: Karl Auer <kauer at biplane.com.au>
> To: ausnog at lists.ausnog.net
> Sent: Mon, 07 Nov 2016 11:01:50 +1100 (EST)
> Subject: Re: [AusNOG] bigpond mail problems?
>
> 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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