Hi again, like andrey told me, i do a new topic.
i install postfix 2.9, webmin 1.610 and virtualmin 3.97 but the option is not there
[–]Server Configuration
Change Domain Name
Change IP Address
Clone Virtual Server
DNS Options
DNS Records
Edit Proxy Website
Move Virtual Server
PHP Versions
Website Options
Website Redirects
when i was re-checking configuration says this
Mail server Postfix is installed and configured.
Postfix is configured to support per-domain outgoing IP addresses.
before the re-checkin i do all in this page: https://www.virtualmin.com/documentation/email/dependent
so dont know if i do something wrong or if virtualmin dont work with postfix 2.9. please help