> Will turning of Ack for the subscriber causing the duplicate correct the
> problem?

No. You need to either delete them or at least set them to NOMAIL.

> -----Original Message-----
> From: John Lyon [mailto:[log in to unmask]]
> Sent: Friday, May 09, 2003 10:51 AM
> To: [log in to unmask]
> Subject: Re: Duplicate Messages
>
>
> > The list is a moderated list and only accepts messages approved by the
> > moderator. The duplicate messages are all coming from the moderator.
> > Although, some subscribers have indicated that they are not receiving the
> > duplicates, the logs appear to indicate otherwise. Is it possible for a
> > system to "reflect" a message back and bypass the authority of the
> > moderator?
>
> In this case yes, as the Approved-By:  header is already there.
>
> > You are correct that there are an additional 6 lines between the two
> > messages. Is there a way within LISTSERV to view the entire header
> > information, or will I need to pull the headers from a subscribers
> > mailbox?
>
> The archives don't keep the full headers, you need the delivered copies
> from a subscribed address. Whenever there is ANY message duplication, the
> full headers is the place to find the duplication.
>
>
> > -----Original Message-----
> > From: John Lyon [mailto:[log in to unmask]]
> > Sent: Wednesday, May 07, 2003 11:11 AM
> > To: [log in to unmask]
> > Subject: Re: Duplicate Messages
> >
> >
> > > One of the lists on our server is sending duplicate messages to
> > > subscribers. The messages appear in the archives and in subscriber
> > > mailboxes with identical time and date stamps. I have confirmed in the
> > > LISTSERV log that it is actually sending the message twice not the SMTP
> > > server causing the duplicate distribution.
> >
> > You have a subscriber who's gateway is "reflecting" the message back to
> > LISTSERV rather than bouncing it according to standards. Looking at the
> > full headers of the duplicates should give you a clue on who this
> > subscriber is. You will notice in the archives, each duplicate message
> > has an additional 6 lines of text. The is the additional received headers
> > which will point to the offender.