How to redirect from mail.domain to httpS://.domain?

Question

htaccess

1. В настройках ISP Manager 5 WWW-домены отключил Перенаправлять HTTP-запросы в HTTPS
2 htaccess прописал

#Redirecting www.domain.com and https://www.domain.com to https://domain.com
RewriteCond %{HTTP_HOST} ^www\.(.+)$ [NC]
RewriteRule ^(.*)$ https://%1%{REQUEST_URI} [L,R=301]
# Redirecting domain.com to https://domain.com
RewriteCond %{HTTPS} off
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

Теперь делает редирект на прямую к https://domain.com.

But, the redirect from mail.domain.com to https://domain.com does not work - I'm afraid it will create duplicates of the site
Although it works fine from www.domain.com to https://domain.com

Tell me what to add for the mail.domain redirect .com?