I haven't get in this particular situation but one question comes to
mind: are you using IPv6? To me it has been a source of problems. I just
disable it.
oscar
On 3/19/2014 4:19 PM, Steven M. Plemmons wrote:
> Suddenly, google is blocking messages sent from our exchange server to gmail addresses. The following error message is given. Is anyone else seeing this?
>
> Thanks,
>
>
> Steve Plemmons
> Systems Analyst II/S
> Department of Mathematics
> Michigan State University
> 619 Red Cedar Road
> C339 Wells Hall
> Office: 517-353-4673
> [log in to unmask]
>
>
>
>
> mx.google.com gave this error:
> [2002:2308:4821::2308:4821] Our system has detected that this message does not meet IPv6 sending guidelines regarding PTR records and authentication. Please review https://support.google.com/mail/?p=ipv6_authentication_error for more information. l7si4236735icq.11 - gsmtp
>
>
> Your message wasn't delivered due to a permission or security issue. It may have been rejected by a moderator, the address may only accept e-mail from certain senders, or another restriction may be preventing delivery.
>
--
Oscar Castañeda
Remote Sensing & GIS
Michigan State University
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