In article <14A8995E-D7BF-4994-98F8-875CCED02085@xxxxxxxxxx> you write: >> I think this needs to be discussed a bit more in the LAMPS WG, but you have a good point here. > >I would extend to 'starting in "XX--" where X can be any ascii character" because who knows whether we need a >completely different prefix one day. I hope you mean X can be any ascii letter or digit. After all, Ctrl/C is an ASCII character. >Or you should explicitly note that ascii-only mailboxes do imply the literal value and those strings MUST NOT >be interpreted as A-Labels. Urrgh. As far as I know, this is an entirely valid ASCII address: fred@xxxxxxxxxxxxxxxxxx That domain name happens to be the A-label for ex�le.com but so what? R's, John