Option to disallow creation of username that aleady exists on another server
We would like to make sure we can't have the same username twice on our servers. On account's we create with theapi we can manage this but it's not possible when you also have whm reseller accounts on these servers.
There are multiple reasons why we would like this :
1) Makes moving accounts accross servers easier
2) Makes it less dangerous using a single mysql cluster accross multiple servers
3) Makes it easier to provide services like a central login pannel
It shoudln't be that complicated to keep a file or sqlite database with all usernames in sync accross servers that updates everytime a user is created or deleted.