>Does this mean you can't SERVE OFF a "trusted" but broken MAILER ?
 
Yes, you can  SERVE OFF a mailer,  but this has a nonzero  effect only if
the NJE origin or 'From:' field contains this address.
 
>Still  this  doesn't  answer  the  question  about  the  peer.  It  says
>"Processing  mail from  POSTMASTER@...." or  does  a peer  look at  some
>X-LSVxxxx tag for the SERVE check?
 
The origin is  extracted from the X-LSVOPT tag, but  only after the SERVE
check.  But anyway  the message  probably came  in with  a 'From:'  field
containing that  address (this  LSVOPT business is  to defeat  mailers or
gateways which convert hostnames or insert  % routings, you want the same
'From:' origin in the archives of  all the peers to avoid confusion). You
should be able to SERVE OFF that origin, though (says he after looking at
the code);  just watch the  nodeid and case. If  the nodeid is  the local
node, it means the mailfile from the peer contained invalid data or a bad
address in the 'From:' field, etc (this  should not happen); if it is the
nodeid  of the  peer list,  it  means this  peer detected  the error  and
substituted  POSTMASTER locally,  but maybe  their mailer  changed it  to
domain form,  or something like  that. The best  is probably to  hold the
list and intercept one of the postings in question.
 
  Eric