webmail subdomain

Hi.

In a standard virtualmin installation, webmail.mydomain.com redirects to mydomain.com:20000, using the default webmin email.

I would like to use roundcube on webmail.mydomain.com so I did the following:

Before creating my virtual server, I did set “Redirect webmail.domain to Usermin?” to No in the default server template.

After creating my virtual server, webmail.mydomain.com was unreachable as expected.

I now created a subserver webmail.mydomain.com and wanted to install roundcube on it, but webmail.mydomain.com stays unreachable.

Creating a subserver for phpmyadmin.mydomain.com however was successful.

Any ideas on what i’m doing wrong?

Thanks