The following people helped me with their comments and improvements to write this HOWTO:
email@example.com(Ulrich Villers) 2:2450/115.3
martin@erde.GUN.de(Martin Seine) 2:2448/413.100
firstname.lastname@example.org(Peter Theisohn) 2:2450/30
email@example.com(Mike Gaertner) 2:249/5060.17
firstname.lastname@example.org(Greg F. Frydenlund)
If you have any additions or error-reports then send them to me!