Sorry to bother the whole list with this, but it's the only way I can 
get a message through to "B. T. Raven" <nihil@nihilo.net>.

"B. T. Raven" <nihil@nihilo.net> responded on this list to my question 
about Emacs replace functions sometimes not working.  But when I tried 
to respond to his email, my response bounced with:

        This message was created automatically by mail delivery software.

        A message that you sent could not be delivered to one or more of its
        recipients. This is a permanent error. The following address(es) failed:

           nihil@nihilo.net
             SMTP error from remote mail server after RCPT TO:<nihil@nihilo.net>:
             host mailserver.nihilo.net [213.171.216.114]:
             550<nihil@nihilo.net>: Recipient address rejected:
             User unknown in virtual mailbox table

In case nihil@nihilo.net is reading this list, do you have any idea why 
your mailserver is rejecting emails addressed to you?  Is there an 
alternate email address I can mail you at?

        Mark Rosenthal
        mbr@arlsoft.com <mailto:mbr@arlsoft.com>