On 7/6/20 6:57 AM, Philip Colmer wrote: > We have a number of "source" lists, e.g. listA, listB and listC. Each > of them has listZ as a member, with the intention that all posts to A, > B and C get replicated to Z. > > This all works until it gets to the point where posts to Z get emailed > out to the members of Z. This is currently failing because the gateway > mail system we are using is reporting "Duplicate header > 'Delivered-To'". > > Is there a setting or mechanism I can set in Mailman 2.1 that strips > the duplicate header or does anyone have any other suggestions on how > to resolve this?
See the FAQ article at <https://wiki.list.org/x/4030540>. Mailman doesn't do well with lists that have both individuals and lists as members (I suspect that is the case here). The main reason for this is if you declare the parent list as an umbrella list, the individual members can't get password reminders, but if you don't, anyone can request a password reminder for the child list and it will be sent to that list. You can use header filter rules on the child list to discard password reminders, but that's another step. Then there is your issue to contend with which would seem to preclude having a list as a member of another list because of the way your outgoing mail service handles this. Note that the Delivered-To: headers are added by your incoming MTA upon delivery the the parent and then again upon delivery to the child. Mailman has no setting to strip those, but you could implement a custom handler to do this if it's your Mailman server. See <https://wiki.list.org/x/4030615> for info on custom handlers. If you aren't concerned about digest members of listZ You can use regular_include_lists to include, e.g. the non-digest members of listZ in posts to listA by including l...@example.com in the regular_include_lists setting of listA, and likewise for listB et al. This, along with some caveats is discussed in the FAQ at <https://wiki.list.org/x/4030540>. -- Mark Sapiro <m...@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan ------------------------------------------------------ Mailman-Users mailing list -- mailman-users@python.org To unsubscribe send an email to mailman-users-le...@python.org https://mail.python.org/mailman3/lists/mailman-users.python.org/ Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: https://www.mail-archive.com/mailman-users@python.org/ https://mail.python.org/archives/list/mailman-users@python.org/
