Lowercasing non-ASCII chars?

[Bob Rogers]

   From: =?iso-8859-1?Q?Mikko_H=E4nninen?= <[EMAIL PROTECTED]>
   Date: Mon, 8 May 2000 21:49:22 +0300

   . . .

   And yes, I know it's not a good idea to use 8bit characters in the
   email addresses.  I'm not planning to use these addresses except as a
   safety catch in case someone happens to use them by accident...

   Regards,
   Mikko

To belabor what is perhaps obvious by now, RFC822 forbids 8-bit
characters in the local-part of an address (or anywhere else, for that
matter).  The key lines are as follows:

     atom        =  1*<any CHAR except specials, SPACE and CTLs>
     CHAR        =  <any ASCII character>        ; (  0-177,  0.-127.)

I haven't actually seen this particular violation in use; has anybody
else?

                                        -- Bob Rogers