AutoSSL for proxy subdomains when root domain exists elsewhere

[Jcats]

Scenario..

domain.com resides on a different server than cPanel.
domain.com's mail is handled on the cPanel server.

I want AutoSSL to generate SSL's for proxy subdomains like cpanel.domain.com and webmail.domain.com however its failing because cPanel cannot verify the domain. Anyway around this?

 2:11:38 PM This system has AutoSSL set to use “Let’s Encrypt™”.
 2:11:38 PM Checking websites for “domain” …
 2:11:39 PM The website “domain.com”, owned by “domain”, has a valid SSL certificate, but additional SSL coverage may be possible for the domains “webdisk.domain.com”, “cpanel.domain.com”, “webmail.domain.com”, and “autodiscover.domain.com”. The system will attempt to replace this certificate with one that includes these additional domains.
 2:11:39 PM WARN The domain “domain.com” failed domain control validation: The system queried for a temporary file at “<a href="http://domain.com/.well-known/acme-challenge/K93X_G426ZJ5TP8BDZMI_1N9WA5BR96-">http://domain.com/.well-known/acme-challenge/K93X_G426ZJ5TP8BDZMI_1N9WA5BR96-</a>”, but the web server responded with the following error: 404 (Not Found). A <abbr title="Domain Name System">DNS</abbr> or web server misconfiguration may exist. The domain “domain.com” resolved to an IP address “1.1.1.1” that does not exist on this server.
 2:11:39 PM WARN The current SSL certificate for “domain.com” secures the domain “domain.com”. However, this domain failed local domain control validation. In order to maintain SSL domain coverage for this domain, the system will not attempt to replace the current certificate.
 2:11:39 PM The system has completed the AutoSSL check for “domain”.

 

[cPanelMichael]

Hello,

As I understand, the AutoSSL feature should still issue a certificate for the proxy subdomains when the parent domain name resolves to an IP outside of the server.

Do you already have an existing SSL certificate installed on the domain name on the cPanel server, even though it resolves elsewhere?

Thank you.

 

[Jcats]

There was an SSL so I removed it completely and am running AutoSSL, now getting:

10:42:30 PM The system will attempt to renew SSL certificates for the following websites:
 10:42:30 PM domain.com (webmail.domain.com)
 10:42:35 PM WARN (XID dsh7r9) The system failed to install an SSL certificate onto the website “domain.com” because of the following error: The certificate does not support the domain “domain.com”. It supports this domain: webmail.domain.com.
 10:42:35 PM The system has completed the AutoSSL check for “domain”.

No certificate has been created.

 

[cPanelMichael]

10:42:30 PM The system will attempt to renew SSL certificates for the following websites: 10:42:30 PM domain.com (webmail.domain.com) 10:42:35 PM WARN (XID dsh7r9) The system failed to install an SSL certificate onto the website “domain.com” because of the following error: The certificate does not support the domain “domain.com”. It supports this domain: webmail.domain.com. 10:42:35 PM The system has completed the AutoSSL check for “domain”.

Hello,

Internal case CPANEL-13308 is open to address an issue where SSL certificates that are issued for the proxy subdomains (but don't contain the main domain) will not install on the server in WHM/cPanel.

As far as manually installing the certificate for the proxy subdomain via the cPanel and WHM user interfaces, the following resolution in cPanel 64.0.27 should allow you to do this:

Fixed case CPANEL-13363: Make SSL install UIs handle mail and proxy subdomains.

Thank you.