On 7/25/2014 1:21 PM, Joe Quinn wrote:
On 7/25/2014 1:18 PM, David F. Skoll wrote:
On Fri, 25 Jul 2014 13:07:34 -0400
Joe Quinn <jqu...@pccc.com> wrote:
Something we have noticed is that Google blocks email from servers
that use IPv6 but do not have an SPF record.
Really? We have not noticed that. We have a number of customers using
us for outbound relaying and our logs show Google accepting mail over
IPv6 even for domains that lack an SPF record.
Regards,
David.
Doh, my mistake, it was reverse PTR I was thinking of...
https://support.google.com/mail/answer/81126?p=ipv6_authentication_error&rd=1#authentication
No, You are right:
"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
<https://support.google.com/mail/?p=ipv6_authentication_error> for more
information. "
Even with ptr records and static IPs, etc. we had to add an SPF record
to at least 2 domains in April to get Google to accept the email over
IPv6. Using IPv4, they did not reject. Not sure what triggers, etc.
but that's the reject notice from the SMTP level at Google logged
above. Since that time, as a best practice, we have been adding an SPF
record to all domains because our servers are dual configured with IPv6
and IPv4.
Regards,
KAM
