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Miles Fidelman wrote:
> Hi Folks,
>
> I just discovered that Sympa automatically adds x-no-archive: yes 
> headers to outgoing messages.  Is there a way to turn this off for a 
> specific list?
No, there is no way for that. If you look at List.pm in subrouting  
distribute_msg, you wil see that unwanted headers are removed first then 
others headers such as "X-no-archive" added. So you can't remove headers 
using "remove_headers" parameter for that (if you do it it will remove 
preexisting x-no-archive header but Sympa will always add its own one).

Herer is the code (List.pm):

  
   ## Remove unwanted headers if present.
   if ($Conf{'remove_headers'}) {
       foreach my $field (@{$Conf{'remove_headers'}}) {
           $hdr->delete($field);
       }
   }
  
   ## Add useful headers
   $hdr->add('X-Loop', "$name\@$host");
   $hdr->add('X-Sequence', $sequence);
   $hdr->add('Errors-to', $name.&Conf::get_robot_conf($robot, 
'return_path_suffix').'@'.$host);
   $hdr->add('Precedence', 'list');
   $hdr->add('X-no-archive', 'yes');
   foreach my $i (@{$self->{'admin'}{'custom_header'}}) {
   $hdr->add($1, $2) if ($i=~/^([\S\-\:]*)\s(.*)$/);
   }
  

If you move the first block (remove) after the second one (add) this 
will not be good enough because your request is to do it per list 
configuration. ($Conf is a hash made from sympa.conf configuration 
file). By the way it would also be possible to remove mandatory headers. 
Not a good idea.

You should add a feature request for it  in Sympa  web site
.

Regards
Serge