> Uhm, not to be a RFC nazi, but what do you base that on? Ol' 822
> define Message-Id as addr-spec, which is pretty much an 'email
> address', which obviously ends in a domain name. And, say,
> 'ruby-lang.org.' is a valid domain name, as domains in fact are routed
> in '.' (much like the filesystem starts at /). Something you learn the
> hard way when fiddling with BIND zone files, forget the ending dot and
> find out that your alias to another domain name instead points at a
> subdomain of the same name.

Actually, that's a bindism. The whole trailing dot thing only pertains
to zone files. Really, the root is "" -- nothing at all. You just
signify that to Bind with the dot.

Ari