On Sunday 23 December 2001 08:07 am, you wrote:
> Rats!
>
> Apologies to the group for sending to the whole group
> what was intended to be private replies to individuals
> who responded to my question about LPI certification.
>
> Apparently our list server incorporates the
> intrinsically evil Reply-To header. Normally I *always*
> check my headers by eye on sending mail, particularly
> replies, but once in a blue moon I get burned.
> Fortunately there was nothing in my two messages that
> was embarrassing to me or anyone else. It just wasn't
> intended for everyone, and the content of the two
> messages was essentially repeated.
>
> Thou shalt not use Reply-To without good reason!
> (Sometimes there is.)

Thou shalt not send replies to a list message without checking the header if 
thou dost not want it to go to the whole list.  As a default a list message 
SHOULD be set to reply to the list.  That is a good default.