[Operators] Gmail federation

Thomas Krutz thomas at krutz.org
Fri Apr 13 17:44:08 UTC 2012

Hello Björn,

and why for gods sake? :) now that even google search is encrypted by 

best regards,

On 04/13/2012 09:06 AM, Björn Kempén wrote:
> Sorry that I missed this email.
> I can confirm that s2s to gmail does not allow tls.
> - Björn
> On Thu, Mar 8, 2012 at 2:57 PM, zhong ming wu<mr.z.m.wu at gmail.com>  wrote:
>> Hello
>> While you are here, could you please confirm or deny that s2s to gmail
>> domain does not allow tls.  Last time I investigated this topic the answer
>> was no tls
>> Sincerely
>> Mr Wu
>> On Mar 7, 2012 8:58 AM, "Björn Kempén"<buffi at google.com>  wrote:
>>> I'm posting an update to this email thread since I was asked to keep
>>> other XMPP operators posted with any updates on the investigations.
>>> I've been in contact with several owners of federated networks, and
>>> performed debugging sessions which hasn't really lead to anything
>>> conclusive.
>>> None of the cases that I've gone through seems to have been related to
>>> the intermittent problem reported here though, and I'm still open to
>>> debugging these issues further.
>>> The people I've been in contact with have either had configuration
>>> issues on one or more of their domains, or experienced problems with
>>> connecting to us in the past but not currently.
>>> Basically, if you have noticed a regression in your services since a
>>> few months ago where you are no longer able to setup a connection to
>>> us, feel free to contact me and I'll look into it.
>>> We'd like to find any regressions in our server-to-server code to
>>> provide a better experience for other federated XMPP networks.
>>> You can also email us at xmpp at google.com , which is an email alias for
>>> several Google engineers working on our XMPP infastructure.
>>> - Björn, Google
>>> On Thu, Feb 23, 2012 at 3:50 PM, Juan Pablo Carlino<jpcarlino at gmail.com>
>>> wrote:
>>>> Hello,
>>>> during the last three months i've experienced an intermittent problem to
>>>> federate with google.com. Actually this is a common problem if you
>>>> browse
>>>> the web in search for this issue -there are several old threads
>>>> reporting
>>>> the same, until some magic happens on Google side and everything goes
>>>> back
>>>> to the expected behaviour-. But this time, the strange thing is that
>>>> some of
>>>> the virtual hosts i manage on my ejabberd 2.1 server can federate fine,
>>>> while others don't. Moreover, these domains with problems later can do
>>>> s2s
>>>> fine with Google, without any change on my side.
>>>> The symptom is always the same: during s2s handshake the outgoing
>>>> connection
>>>> from my server closes by timeout waiting for a reply from Google on the
>>>> wait_for_validation state. But i don't see why some domains remain
>>>> unaffected while others don't.
>>>> If anybody is experiencing the same issue i would be glad to know about
>>>> it.
>>>> Regards,
>>>> Juan Pablo

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