On Fri,  22 Oct 1999  09:39:28 -0400 (EDT) Roger  Fajman <[log in to unmask]>
said:

>So, Default-Options  are applied to non-subscribers  (where meaningful),
>but not to sublist subscribers?

A sub-list  subscriber has his own  set of options from  his subscription
entry. These options override "Default-Options=". This is consistent with
the way LISTSERV options work.

>And   for    non-subscribers,   only   Ack=   is    honored,   but   not
>Default-Options=Ack/NoAck?

The problem  is that the  absence of  ACK in "Default-Options="  does not
mean  that the  list owner  intended for  NOACK to  be in  effect. It  is
difficult  to  move  the   functionality  to  "Default-Options="  without
breaking existing headers based on "Ack=".

>With subscribers it's never been obvious to me which takes precedence if
>both are specified.

"Default-Options="  is never  applied  to an  existing  subscriber -  the
options from the  subscriber's entry are always used. If  none of the ACK
series of options were specified, "Ack=" is then queried.

  Eric