On Mon, 3 Aug 1992 15:35:30 EDT "Steve Traugott [UUs-L]"
<[log in to unmask]> said:
 
>If LISTSERV's notice to the owner contained the "problem" address in
>the Subject:, an abbreviated NOMAIL (r)eply might look like:
>
>From: thelist-owner@somewhere
>To: LISTSERV@vmhost
>Subject: Re: Delivery Error Notice Sent to TheList-L for [log in to unmask]
 
Or it might look different. The address  is often well over 40 bytes, the
subject line would  have to be folded and there's  no telling whether the
user agents  will truncate it  then. It's  not a stupid  thing to do  - a
subject line  is supposed to help  the human reader sort  messages and so
on, if it's 140  characters long it isn't very useful.  And, as you said,
parsing the  thing is also an  open question. There are  programs that do
that, but they are not 100% foolproof.
 
  Eric