Mark Sapiro wrote: > .. you said when you receive duplicates, the list was > addressed twice in the post, once in To: and once in Cc:. Thus, I am > suggesting that the list actually receives the post twice and sends > it twice and that's why you get two copies.
I mis-spoke. It only occurs in that one list when someone CC's the list. I would understand if it were in both TO _and_ CC. Since all lists and MUA's are different, people don't know whether to Reply or Reply-All, so it's 50/50 whether the list address will be in the TO _or_ CC, but most people know to not double up. > There may be something here with digests too, but I don't think so. I have not asked about digests but I don't think I'll find anything there either. > The process of your not getting a dup when I address my reply to both > you and the list IS a Mailman process. You only get the direct message > from me because you have requested no dups, and Mailman sees your > address in the To: of my post so it doesn't send to you. > > This is not the case on the other list where maybe the list receives > the post twice. Remember that I am not involved in the discussions where I get the dupes. I understand the mailman code filters possible dupes when TO = a subscription address. I have confirmation from a single Outlook user that I get dupes when they do not. (I wish I had a larger sampling of responses over a longer period of time but I'll take what I can get.) This points to an MTA issue and not list or MUA. I am now checking in that area. Again the problem is that I only get dupes to this one address when the list is in the CC. I can't believe an MTA bug would be that specific so it might be some timing issue, a hiccup during greylisting processing, etc. > I don't think it's Mailman per se, but I can't be sure without knowing > what is happening. I still think it could be actually two copies of > the post reaching the list, but the fact that no one else on the list > admits to receiving dups makes this seem unlikely. I would like to > help you get to the bottom of this if I can. > > I think the next thing is to collect both copies of some duplicated > posts with full headers and examine the Received: chains in each to > try to determine where the duplication is occurring. If you need help > with this, you can post headers from duplicated posts to this list or > send them to me off list, and I will try to help. Over the last month or two I have been going over the headers myself and the headers on each copy of the mails are exactly the same: same Received path and time stamps, and same Message-ID (!!). The only pattern between what generates dupes and what does not is that the list address is in the CC of duped mails - but only on that list, not in this mailman-users list. :( Please allow me a few days to pursue the MTA route and I'll post a note here to let you know if I find anything. Based on your comments and info from the other list I'm fairly convinced that I shouldn't be wasting any more of your collective time. But I will let you know what I find out. Thank you kindly for your dedicated interest. ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp