I just tried replying to a mail sent to xemacs-bugs(a)xemacs.org and all
mail to that address is bouncing:
----- Transcript of session follows -----
... while talking to mail.xemacs.org.:
>> RCPT To:<xemacs-bugs@xemacs.org>
<<< 550
<xemacs-bugs@xemacs.org>... User unknown
550 xemacs-bugs@xemacs.org... User unknown
Any idea why this is?