We can't until a standard exist with a doctype in it (I've been
using various recommended doctypes that were later changed, it's
a pain). So let's hope the RFC makes it RSN...
X-400: C=GB; A= ; P=Nexor; O=Nexor; S=koster; I=M
X-500: c=GB@o=NEXOR Ltd@cn=Martijn Koster