On Mon, Jun 16, 2014 at 09:12:18AM +0200, Erwan David wrote: > I do not know whether there is a email server there, but dk. has a A > record, thus user@dk might be a valid email address...
Though "technically" valid, it is in practice unusable. Almost all senders will rewrite this to <user@dk.$senders_domain>. Getting the whole world to disable short hostnames is a quixotic exercise. -- Viktor. >