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