What changes do I need to make on my VPS server to allow a subdomain to be pointed from an Apache server hosted on another server?

Question

I need to point a subdomain, let's say info.abc.com (hosted on server A) to another subdomain info.xyz.com (hosted on Hostgator VPS server).

Now, I have already updated server A with a CNAME, which has already been propagated.

Name: info.abc.com Type: CNAME TTL: 14400 Record: info.zyx.com

But when I am trying to open info.abc.com, it shows

enter image description here

I have done this same with many shared hosting services and it worked. But this time, the destination server is VPS, so having some issues.

Can anyone please suggest any server-level changes which are required in VPS for this?

• I have already updated the CNAME on server A with record value info.xyz.com
• I have already created the subdomain info.xyz.com on server B, and it works fine.