> Actually, this is non-trivial to fix.  If I were to allow the `/'s,
> sendmail would think it's supposed to write to a file rather than
> forwarding the mail.

Well...I don't know your local sendmail.cf, but you sent a cc: to that
address, and sendmail didn't confuse it with mail addressed to a file.
This is probably because of the presence of an @ in the address; in
sendmail.cfs I've read, sending to files happens only when the address
would otherwise be taken as a local address, in particular, when it
doesn't have @some.other.machine tacked on.

					der Mouse

			    mouse@collatz.mcrcim.mcgill.edu