<div dir="ltr">Same here. I have some customers using either "<a href="http://mail.bigpond.com">mail.bigpond.com</a>" and "<a href="http://smtp.telstra.com">smtp.telstra.com</a>" 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=<a href="http://smtp.telstra.com">smtp.telstra.com</a> type=MX: Host not found, try again" but doing a manual session to "<a href="http://smtp.telstra.com">smtp.telstra.com</a>" from a TID service works fine (both unencrypted TCP/25 and encrypted TCP/465).<div><br></div><div>Currently no work-around and I can't really see anything amiss in DNS either. Anyone from Telstra's mail team floating around?</div><div><br></div><div>Cheers,</div><div><br></div><div>James</div></div><div class="gmail_extra"><br><div class="gmail_quote">On 7 November 2016 at 15:32, <a href="mailto:paul%2Bausnog@oxygennetworks.com.au">paul+ausnog@oxygennetworks.com.au</a> <span dir="ltr"><<a href="mailto:paul+ausnog@oxygennetworks.com.au" target="_blank">paul+ausnog@oxygennetworks.com.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Anybody know if there are any updates on this one ? we have a customer who has their smart host set to <a href="http://mail.bigpond.com" rel="noreferrer" target="_blank">mail.bigpond.com</a> 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 :-)<br>
<br>
Regards<br>
<span class="HOEnZb"><font color="#888888">Paul<br>
</font></span><span class="im HOEnZb"><br>
-----Original Message-----<br>
From: AusNOG [mailto:<a href="mailto:ausnog-bounces@lists.ausnog.net">ausnog-bounces@lists.<wbr>ausnog.net</a>] On Behalf Of Phil Memery<br>
Sent: Monday, 7 November 2016 11:17 AM<br>
To: Karl Auer<br>
Cc: <a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br>
Subject: Re: [AusNOG] bigpond mail problems?<br>
<br>
Hmmm the very same circle of pain as the one I have.<br>
<br>
The PBL list stuff was noticeable after I dropped <a href="http://smtp.telstrabusiness.com" rel="noreferrer" target="_blank">smtp.telstrabusiness.com</a> from the postfix config.<br>
<br>
----- Original Message -----<br>
From: Karl Auer <<a href="mailto:kauer@biplane.com.au">kauer@biplane.com.au</a>><br>
To: <a href="mailto:ausnog@lists.ausnog.net">ausnog@lists.ausnog.net</a><br>
Sent: Mon, 07 Nov 2016 11:01:50 +1100 (EST)<br>
Subject: Re: [AusNOG] bigpond mail problems?<br>
<br>
On Mon, 2016-11-07 at 10:44 +1100, Ross Wheeler wrote:<br>
> Since sunday morning, my mailque has a significant number of messages<br>
> sitting, waiting... every one of them to bigpond.<br>
><br>
> Logs say:<br>
><br>
> Name server: <a href="http://extmail.bigpond.com" rel="noreferrer" target="_blank">extmail.bigpond.com</a>.: host name lookup failure<br>
<br>
I have a client using <a href="http://smtp.telstrabusiness.com" rel="noreferrer" target="_blank">smtp.telstrabusiness.com</a> as a smarthost - and he's seeing "451 4.4.0 DNS Query failure" in his Exchange server logs.<br>
The server itself can resolve that address, though, so it's a bit of a mystery.<br>
<br>
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.<br>
<br>
Short of calling Telstra and hoping, I'm not sure I can do much else.<br>
<br>
Regards, K.<br>
<br>
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