* Roberto C. Sanchez: > Then, I guess the relevant question has to do with whether or not > adduser (and the rest of the components that touch or use the username) > are RFC2822 compliant. Most certainly they are not. Embedded NUL characters are allowed in local-parts. I don't think this is a problem (apart from the fact that the internet will be secure once you can send mail to <"\ "@deneb.enyo.de>).