List of prohibited usernames and subdomains?

[jbverschoor]

Hi,

For my SAAS application, I allow people to register a subdomain as well as a username.

I'm building a list of prohibited names:

subdomains: www www2 admin mail

usernames: admin root administrator postmaster

any other suggestions?

[mooism2]

Usernames:

hostmaster webmaster filemaster (anything ending ...master really) abuse ssl

Subdomains:

ftp smtp pop (everything listed in /etc/services) (anything related to your naming/branding) (country codes)

[jbverschoor → mooism2]

Ah nice one about the /etc/services I guess most of /etc/passwd should also be prohibited