Such an internal dns server is very unusual.
So there are two options:
- Your hoster has installed it -> ask your hoster
- you have installed it -> so remove it or configure it, so it works.
It's not a certificate problem, it's an unknown, buggy local configuration you have to fix.
PS: There
Yeah its a shared hosting. I am using plesk.
This topic:
Looks like there is a mess of different tools.