Beware of anon.penet.fi message!

[Eric Hughes]

Currently to mail to person 1234 at penet, you send mail to 

	anon1234 at penet.fi

This mail goes out anonymously from the sender, either using an
existing mail address or creating one.  But if one were able to reach
person 1234 also with the email address, say,

	name1234 at penet.fi

the behavior could be _not_ to make this posting anonymous.

To wit, the 1234 indicates that you are replying to a pseudonymous
recipient, and the anon/name pair indicate whether the sender is
anonymous.  Thus no change in default behavior, and no new header
lines.

Eric