[Bug 1216960] [NEW] Address removed from CC-list
Public bug reported: I've run into the following behavior of mailman: I sent an email and CC-ed somebody@bla1.com, who also is a member of mailing list ml@bla2.com, which I also CC-ed: ... CC: somebody@bla1.com, ml@bla2.com ... When looking at the copy I got from the mailing list (I'm also a member), the email appeared as: ... CC: ml@bla2.com ... I saw this and thought I forgot to explicitly CC somebody@bla1.com, and had to go back to my sent box to find that I did indeed explicitly CC that address. So mailman is losing information when forwarding the email, and in my view this is a bug. The behavior is coupled to the member.receive_list_copy property (Subscription Option 'Avoid duplicate copies of messages?'), but I don't see why not sending a copy should mean removal from the CC-line in other copies. I suspect the behavior is due to the last 2 lines in this snippet from src/mailman/handlers/avoid_duplicates.py: ... if send_duplicate: msgdata.setdefault('add-dup-header', set()).add(r) newrecips.add(r) elif r in cc_addresses: del cc_addresses[r] ... ** Affects: mailman Importance: Undecided Status: New -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1216960 Title: Address removed from CC-list To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1216960/+subscriptions
Are you reporting this for Mailman 2.1 or 3.0? The handler you reference is the Mailman 3.0 handler, but I suspect your observation of the behavior was on a Mailman 2.1 list. In any case, this behavior is intentional by design. Cc: recipients who are list members with their 'avoid duplicates' option set are removed from the Cc: list to keep that list from growing excessively in long threads with many 'reply-all' replies. -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1216960 Title: Address removed from CC-list To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1216960/+subscriptions
Mark, thanks for looking into this. I now also found some relevant prior discussions: http://mail.python.org/pipermail/mailman-users/2006-May/051192.html http://mail.python.org/pipermail/mailman-developers/2006-May/018777.html http://osdir.com/ml/mailman-users/2013-05/msg00090.html https://bugs.launchpad.net/mailman/+bug/266161
Are you reporting this for Mailman 2.1 or 3.0? The handler you reference is the Mailman 3.0 handler, but I suspect your observation of the behavior was on a Mailman 2.1 list.
Yes, version 2.1.13. Is the 3.0 behaviour different?
In any case, this behavior is intentional by design.
Perhaps it would be good to document this, f.i. here ( http://www.list.org/mailman-member/node21.html ) like this: ... If your address appears there, then Mailman can be told not to deliver another copy to you. A side effect of this is that your email address will be stripped from the CC-list in the copy to others, to keep that list from growing excessively in long threads with many 'reply-all' replies. This has the consequence that others will not able to tell from their copy whether you were explicitly CC-ed or not, and a reply-all from others to the list copy will not explicitly cc you. ...
Cc: recipients who are list members with their 'avoid duplicates' option set are removed from the Cc: list to keep that list from growing excessively in long threads with many 'reply-all' replies.
For me, the size of CC-list is not a problem, dropping CC-list members is a problem. Of course there are others that would like other behaviour, f.i. this bug report here https://bugs.launchpad.net/mailman/+bug/266682 Perhaps we can add a configuration option prune_adressee_lists=lists/who with settings: - none/none (my preference) - cc/avoid_duplicate (current behaviour) - cc+to/all (266682) -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1216960 Title: Address removed from CC-list To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1216960/+subscriptions
participants (2)
-
Mark Sapiro -
Tom de Vries