Now I think I've confused you...!
 
In this case, the message had *not* been distributed to the list
previously, and still had that header.
 
That is what was confusing -- on showing up in the moderators' box,
it *looked* as if it had been distributed, but it hadn't...
 
Wendy
 
 
> There are STILL a  number of mailers out there that  use the RFC822 "To:"
> info to decide where to deliver the messages. So here is what happens:
>
> 1. Joe posts to list.
>
> 2. LISTSERV forwards to moderator.
>
> 3. Moderator approves and forwards back to list.
>
> 4. LISTSERV distributes happily.
>
> 5. Broken  mailer gets  message, sees  "To:" line,  and delivers  back to
>    list.
>
> 6. LISTSERV forwards to moderator.
>
> It can  be difficult to identify  the failing addresses, but  at any rate
> the message should not be distributed a second time.
>
>   Eric