On Fri, 20 Dec 1996 17:16:44 -0500 Jim McIntosh <[log in to unmask]> said:
 
>It has become apparent that some changes are warranted. First, there are
>complaints about posts being dropped. News servers care about the format
>of the Date:  and Message-ID: lines, but the listserv  doesn't and so it
>distributes posts  with dates that  don't conform  to the RFC  which are
>then rejected by the news server.
 
LISTSERV enforces a "Date:" header that should be acceptable to most news
software when  you are using  FULLHDR, as recommended for  gatewaying (it
makes no attempt  to check the time zone against  the "official" list and
thus  it  is  arguably  not  100% guaranteed  to  be  RFC822  compliant).
Unfortunately many list owners insist on using IETFHDR, which operates on
the premise of a SMTP alias; what you send is what you get. LISTSERV does
not do  any specific checking for  "Message-ID:" since it has  no use for
this field.
 
>The listserv cares about the format of the From: address (which the news
>servers ignore). Consequently the gateway  mails posts to the list which
>have invalid From:  addresses, and so the listserv  uses the Return-Path
>line making it appear that the post came from the gateway.
 
LISTSERV  never uses  the "Return-Path:"  and will  accept postings  with
invalid  "From:" lines  (commands, however,  are refused  if there  is no
valid "From:"  line). The  problem is when  the gateway  inserts "Sender:
[log in to unmask]". If you remove this tag the problems will go away.
 
  Eric