Just a note that it is bad form to use challenge-response spam detection
on public mailing lists - which is a kind of spam filter that requires
anyone who emails you to confirm they are not a spammer by jumping
through some hoops. You should use software that has the basic ability
to tell the difference between list mail and other mail, and act
accordingly. (Same goes for vacation software)

Quoting a subscriber:
|
| The message you sent requires that you verify that you 
| are a real live human being and not a spam source.
| 
| To complete this verification, simply reply to this message and leave
| the subject line intact.
| 
| The headers of the message sent from your address are show below:

kim