Fixed subdomains by default?

[xyladecor]

What do you think about fixed submains like webmail.* phpmyadmin.* ftp.* and antispam.* by default? You could realize this by adding a serveralias in the master.conf or a new subdomains.conf in sites-available with symlink to sites-enabled. After that every hosted domain has these subdomains. It's only a simple if-else function in the subdomain template needed to do that: e.g if subdomain=webmail, phpmyadmin, antispam, or ftp then error "Subdomain already exists!" else generate it?

I don't think it's a security hole, but it's more simple to remember than domain.tld/tools/...