Can you use AutoSSL on a Subdomain that's pointing to another server/IP

Sounds

Registered
Feb 14, 2018
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Ireland
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Root Administrator
Hi folks,

I need a few pointers on securing a Subdomain with SSL, that's pointing to another server.
This is the first time I tried this across two servers, main dedicated server and linux VPS.

On the main server I have WHM/cPanel, and domain1.com
That domain has its own cPanel account and AutoSSL is working on it.

www, domain1.com, and http URLs are redirecting to https, so I guess it's working.

What I want to do now is assign AutoSSL to a Subdomain, but I am pointing this
Subdomain to a different server/IP, which is on a VPS with Linux, Ubuntu 16.04 and LAMP.

I already set up a virtual host for the Subdomain on the second server with Apache2.
So the public_html directory exists on the second server/vps for clients.domain1.com

Next

I went into the cPanel account for domain1.com and clicked Subdomains,
I created a new Subdomain there "clients"

This new subdomain doesn't have a cPanel account.

I went into DNS Functions > Edit DNS Zones, and selected domain1.com
I can see there are 4 new records in there for "clients"

clients | 1140 | IN | 354.474.484.485
www.clients| 1140 | IN | 354.474.484.485
default._domainkey.clients| 1140 | TXT | Some long key
clients| 1140 | TXT | "v=spf1 +a +mx +ip4:354.474.484.485 ~all"

I changed the IP's for the first two, clients and www.clients to the IP of my second server.
So now I can access clients.domain1.com's public_html directory on the second server.

Should I change "v=spf1 +a +mx +ip4:354.474.484.485 ~all" to the second server IP??

Actually that's as far as I've got so far, maybe someone could correct me if I'm wrong,
Back on server 1 I had a look at Manage SSL Hosts and could see two records for:

clients.domain1.com
www.clients.domain1.com

They both have green locks on them.

I'm still seeing the security warning of I visit https://www.clients.domain1.com
 

24x7server

Well-Known Member
Apr 17, 2013
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Hi,

AutoSSL will only issue certificate for the domains and subdomains hosted on the server where AutoSSL is issued and for this very same reason, AutoSSL validate the domain existence on the server and then only issues and install the certificate..
 

Sounds

Registered
Feb 14, 2018
3
1
3
Ireland
cPanel Access Level
Root Administrator
Hi,

AutoSSL will only issue certificate for the domains and subdomains hosted on the server where AutoSSL is issued and for this very same reason, AutoSSL validate the domain existence on the server and then only issues and install the certificate..
Can I assign an SSL cert on the other server where the Subdomain is pointed to?
Linux server, Ubuntu 16.04, LAMP setup.
 

cPanelMichael

Technical Support Community Manager
Staff member
Apr 11, 2011
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Twitter
Hello,

AutoSSL certificates are only supported for domain names or subdomains that resolve to the cPanel server the certificate is generated on. If the domain resolves to a remote server, then it's not possible to generate a certificate for it using the AutoSSL feature.

You could technically install a self-signed or commercial SSL certificate for that subdomain on the remote server, but keep in mind you won't be able to use a certificate generated via the AutoSSL feature. Additionally, it's unsupported so we wouldn't be able to troubleshoot any issues that arise from the installation attempt.

Thank you.