Crypto negotiation failed after reinstall

Enjoying this software.

But having trouble with one site.
First step was going 100% good
But then wanted to add subdomain.
Then the trouble started.


Made a complete reinstall of the domain
still getting this error message

Error while completing domain challenges


Crypto negotiation failed: stream_socket_enable_crypto(): SSL operation failed with code 1.
OpenSSL Error messages: error:14090086:
SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

open ssl is running
php 5.6
apache latest version
DirectAdmin latest version

Can it be that the domain is in a firewall/blacklist,
because of to many times to try to get SSL?

Regards Niels
the Netherlands