Am Mo, den 13.02.2006 schrieb Cleber P. de Souza um 23:36:
There is a way to allow usernames with dots like firstname.lastname. On Red hat 7.3 it was possible, but after Fedora 1 it was blocked. How this could be changed?
Cleber P. de Souza
This seems to become a FAQ. If you search the list archive you will find some discussion about it.
For which reason do you think you need such kind of usernames? If it is for mail addresses then you don't need those dotted usernames.
Alexander