How to delegate a domain .fr registered with europeregistry.com

Dyn's servers are responding correctly - I've just tested them with a domain registered there.

Have you purchased Standard DNS for sabiasque.fr?

Should I open a ticket on Dyn?

If the problem only relates to TCP, and only on that server, then yes. I do also see the same as you're describing, though only on IPv4 - it works fine on IPv6.

Hi, I have exactly your same problem. Did DynDns solve that for you in the end?

Hi Cry,

I can't connect to http://ns1.mydyndns.org on port tcp port 53 either from my laptop in Portugal or my server in france:

$ telnet ns1.mydyndns.org 53
Trying 204.13.248.76...
telnet: connect to address 204.13.248.76: Connection timed out
Trying 2600:2001::76...
telnet: connect to address 2600:2001::76: Network is unreachable

and apparently the connection is also timing out from france and AFNIC considers it a fatal error.

I have purchased Standard DNS for http://sabiasque.fr and it is correctly configured:

$ host www.sabiasque.fr ns1.mydyndns.org
Using domain server:
Name: ns1.mydyndns.org
Address: 204.13.248.76#53
Aliases: 

www.sabiasque.fr is an alias for sabiasque.fr.
sabiasque.fr has address 62.193.232.65

But it I force the command to use TCP and IPV4 I'll get a timeout:

$ host -T -4 www.sabiasque.fr ns1.mydyndns.org
;; connection timed out; no servers could be reached

I can connect with telnet to all other DynDNS servers (ns2.mydyndns.org, http://ns3.mydyndns.org, http://ns4.mydyndns.org and http://ns5.mydyndns.org) on TCP port 53 but not to http://ns1.mydyndns.org...

Should I open a ticket on Dyn?