Symptoms
CA certificate is returned incorrectly for website hosted on Legacy Linux Shared Hosting node registered in OA.
Cause
Apache server misconfguration.
Make sure that there is no 'SSLCERTIFICATECHAINFILE' directive mentioned in main Apache configuration files - here we assume that configruation files which are not related to webspaces virtual hosts
For example:
# grep 'SSLCERTIFICATECHAINFILE' /usr/local/pem/etc/apache/httpsd_chain.pem
# SSLCERTIFICATECHAINFILE /usr/local/pem/etc/apache/httpsd_chain.pem
Resolution
Remove obsolete 'SSLCERTIFICATECHAINFILE' directives.