> On Fri, Aug 31, 2012 at 12:22 AM, <kev.p...@gmail.com> wrote:

>> On Friday, August 31, 2012 2:06:03 AM UTC+10, Joseph Chiu wrote:

>>> Moreover, this problem has come back in the last few days again, where
>>> non-Gmail e-mails are successfully delieverd, every day and throughout
>>> the day, to the affected domains, but the DNS server queried by the
>>> affected Gmail server was continuing to return bad DNS resolution.
>>> I'm not entirely sure this is a Google public-DNS problem, or if
>>> there's a separate internal DNS system that Google maintains, but I
>>> still suspect that it is a DNS problem inside Google.

>> I'm now quite convinced that this is a problem with Gmail, or with the
>> DNS that it uses (whatever that might be).

> It is likely to be a problem (networking or firewall) beween some
> resolvers and the two name servers - TIMEOUT happened to certain location
> only. We have started to investigate this.

> Thanks
> Yunhong

>> Recently affected emails are ending up failing permanently, but in the
>> previous episode (around Aug 13), some mails were delivered days late.
>> Here's one set of headers from an affected email, they clearly indicate
>> that the delay (~ 28hrs) is within Gmail/Google's internal network.
>> Specifically, 10.50.219.161 looks to be implicated.  I have a few more
>> emails, but would have to dig them out.  Obviously I would love to see
>> headers for more recent emails, but as they haven't been delivered (and now
>> bounced back as a permanent failure), I can't.

>> Received: from mail-gh0-f179.google.com (mail-gh0-f179.google.com[209.85.160.179])

>>         by mail63.csoft.net (Postfix) with ESMTP id
>> 9EF3128437

>>         for <.....@pulo.com.au>; Mon, 13 Aug 2012 10:24:40 -0400
>> (EDT)

>> Received: by ghbg2 with SMTP id
>> g2so2835479ghb.38

>>         for <.....@pulo.com.au>; Mon, 13 Aug 2012 07:24:40 -0700
>> (PDT)

>> DKIM-Signature: v=1; a=rsa-sha256;
>> c=relaxed/relaxed;

>>         d=gmail.com;
>> s=20120113;

>> h=mime-version:in-reply-to:references:date:message-id:subject:from:to

>> :cc:content-type;

>> bh=wcvgaFUKOqrsP1D10uaFNCdHSCJIdTFgfvBOy6DcLjM=;

>> b=U+8lkQrvDEqXXc79nA+bFL52NWXGTF17CQahFEvlsXGrMl9R8/jfRNqs/HOyJDUDEj

>> 5ODEM3+yH+CKk62ypb3worN3inveZOo0rgLrJHHzG2UuyxMUfpBUzJTeC/qUa8NPRG30

>> JDx2j2RaNXY5fJnWGHfc6q5p3aGEUtLbXd0nQ4u6u0Pyhy564YFaDYsCVdFofKYPXUME

>> iJL1RY331YORWlX5qbbpPTbY901LCOlsstUKW0S71nCVg3Ih/jEOcZYeWkCAHreX1VEZ

>> 2cofZIHR1bwpc6zTEqD6RR26wUiDO7Qb/C1KU5tuAX0wsHTOLUJGUCq8E4Upkl+76UMx

>> F02g==

>> MIME-Version:
>> 1.0

>> Received: by 10.50.219.161 with SMTP id pp1mr2626805igc.19.1344765776913;
>> Sun,
>>         12 Aug 2012 03:02:56 -0700
>> (PDT)

>> Received: by 10.64.93.233 with HTTP; Sun, 12 Aug 2012 03:02:56 -0700
>> (PDT)

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