What is this insecurity? CRL & OCSP report for ssl.synovite-scripts dot com

A External Domain Request to ssl.synovite-scripts.com was being detected by Browser JSGuard and then checked here: http://certificate.revocationcheck.com/ssl.synovite-scripts.com
Content-Type in response is set ‘application/x-pkcs7-crl’ and should be replaced with ‘application/pkix-crl’ (RFC 5280, section 4.2.1.13)
Why do we see all such configuration errors online, this is not improving user security.

polonus (volunteer website security analyst and website error-hunter)

See: https://www.eff.org/https-everywhere/atlas/domains/synovite-scripts.com.html
What I get on that https page is

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<Error>
<Code>AccessDenied</Code>
<Message>Access Denied</Message>
<RequestId>C50FC983DCB3215E</RequestId>
<HostId>
g2wBDUrFTtuj+KFVeQPWqQ26R9N0lyD3jN76XmgfajFnl15gJ61RZtqvZPA/Cv4k+uyL+vpXM9g=
</HostId>
</Error>

Security header situation, see attached
I get bad zone: Could not get name servers for ‘ssl.synovite-scripts.com’.
http://www.dnsinspect.com/synovite-scripts.com/1429284061
Exposing name server’s versions may be risky, when a new vulnerability is found your name servers may be automatically exploited by script kiddies until you patch the system
Could not resolve domain synovite-scripts.com…This error indicates that the domain name servers (DNS) that translate your domain name into an IP address failed to respond during the test cycle.

The IP address has a bad web rep: https://www.mywot.com/en/scorecard/93.184.220.20?utm_source=addon&utm_content=warn-viewsc

polonus