Is there a way to force users to login using their ID's only, and enforce pure a-z letters and 0-9 numbers with no special letters in that login, with a maximum of 16 letters as login name?
Again, with one last follow-up question! Is it possible to do the same for passwords too? to enforce a maximum numbers of letters/numbers to 16, and only allow a-z letters aswell as 0-9 numbers in it?