> 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.