server config, <VirtualHost>, <Anonymous>, <Global>
1.1.5 and later
Normally, proftpd disallows root logins under any circumstance. If a client attempts to login as root, using the correct password, a special security message is sent to syslog. When the RootLogin directive is turned On, the root user may authenticate just as any other user could (assuming no other access control measures deny access); however the root login security message is still sysloged. Obviously, extreme care should be taken when using this directive.
The use of RootLogin in the Anonymous context is only valid when the User / Group defined in the Anonymous block is set to 'root'