dane.sys4.net IPv6 problem

[Karol Augustin]

Hi,


Until recently I was using HE tunnel as IPv6 provider until AWS enabled
native IPv6 support in my region and everything was working without
problems.
Since I have enabled native IPv6 on my mail server and have problem with
DANE tester site https://dane.sys4.de/smtp/augustin.pl

It always times out on IPv6 address and I am confident that everything
is configured properly as I receive lots of connections by IPv6
including gmail, Debian and Postfix mailing lists etc.

Jan 20 06:32:38 mail postfix/postscreen[17537]: CONNECT from
[2604:8d00:0:1::4]:54406 to [2a05:d018:76d:5af6:d050:9b30:6bf7:df98]:25
Jan 20 06:32:38 mail postfix/postscreen[17537]: WHITELISTED
[2604:8d00:0:1::4]:54406
Jan 20 06:32:38 mail postfix/smtpd[17538]: connect from
russian-caravan.cloud9.net[2604:8d00:0:1::4]
Jan 20 06:32:39 mail postfix/smtpd[17538]: Trusted TLS connection
established from russian-caravan.cloud9.net[2604:8d00:0:1::4]: TLSv1
with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)

You can see test results here:
https://network-tools.webwiz.net/email-test.htm?email=augustin%2Epl&connectionType=sslexplicit25&TLSProtocol=tls1%2E2&allmx=true&rdns=true&IPv6=true

Is there any known problem with DANE tester IPv6 configuration?

I appreciate your help.

Karol



-- 
Karol Augustin
karol at augustin.pl
http://karolaugustin.pl/