Nancy asked in issue 503:
 
    Now, I have a question.  When we reply to a mailing list should
    we delete the Cc to [log in to unmask]  Or, does it not
    make any difference?  I assume that it doesn't make a difference,
    but I'll ask just in case.
 
It sends another copy of your article to [log in to unmask], which
will cause it to be bounced to [log in to unmask]  So
there'll be two copies folded into the digest "in progress".  Unless
I manually take it out, you'll see two in the next issue.  Since I'll
be relying on autopilot now, it's particularly important.
 
Your mailer should *not* be doing this.  We have spent some time trying
to assure that this doesn't happen.  If you look at the headers,
you'll see that there is a "Reply-to: [log in to unmask]".  This
is the only one your mailer should pick up on an "ordinary reply".  Many
mailers have a "reply-to-all" - make sure you're not using that.  If
you don't have this option (as in, all replies are "reply-to-all") or
your mailer is doing it regardless of which one you use, complain to your
SA - your mailer is busted.  In the interim, please delete the CCs.
 
[It could be that your mailer is using *both* the From: and Reply-to:
addresses.  This is broken behaviour.]
 
[Posted in FML issue 0504]