Question CNAME and SSL

[Chepplesk]

Server operating system version

Debian 11

Plesk version and microupdate number

18.0.58

Hi, I need to point a domain of one of my client (crm.tenant.ext) via CNAME to a site of mine hosted on Plesk (tenant.myserver.ext).

crm.tenant.ext CNAME tenant.myserver.ext

My client created the CNAME , technically everything works except the Let's Encrypt SSL certificate. I get the error SSL_ERROR_BAD_CERT_DOMAIN because the certificate is valid only for tenant.myserver.ext and not for the source domain (crm.tenant.ext). My server has Plesk Obsidian updated to the latest release, and Debian 11. How to fix it? Thanks to all

 

[Peter Debik]

You could create crm.tenant.ext as a new domain in the same subscription ("Add domain" button), but enter the same document root directory into it that tenant.myserver.ext uses. When crm.tenant.ext resolves to tenant.myserver.ext, it should be possible to issue a domain validated SSL certificate for it.