Question generate certificate for webmail on another server

[Calin]

Hello!

I have the following scenario.

VPS1 - email server (using plesk obsidian): ex: server.mydomain.com ex ip: 2.2.2.2
VPS2 - hosting server: ex: mydomain.com: ex ip: 1.1.1.1

two different VPS servers.

We have configured the VPS1 sever only for emails (Hosting type: no hosting) and is working fine.

the problem is with the webmail.mydomain.com ... where is not secured.


It is possible to generate using let`s encrypt a certificate for the webmail.mydomain.com, if webmail.mydomain.com is pointing to the VPS 1 and not VPS 2 ???


I don`t think it`s gonna work...but I am asking, because .... probably the let`s encrypt see the webmail.mydomain.com as a subdomain for VPS2 and the certificate should be generated on the VPS2....but the webmail.mydomain.com is on VPS1 configured.