SSL and Domain Mapping

Trying to install SSL for a mapped domain.

A domain name can't be added as Add-on domain on BueHost, because it has to have its own directory root. It can be redirected with A record from another server. SSL is installed in the server for the domain. But the mapped domain can't be mapped with HTTPS, getting security warning message.

Please advise how to set up A record so the Domain Mapping will recognize SSL?