Please be advised that in the same wiki page, there is a section called "API Versions". Two different but similar API versions are presented (API version 3.1 was introduced in Mailman 3.1).
Port 9001 is what unittests are using (see also https://gitlab.com/mailman/mailman/blob/661921ba4c0ae612f15b229227e7f836b43227f2/src/mailman/testing/testing.cfg#L32), while port 8001 is the default port. I think the reason why the document is using 9001 is, the documents' examples are also tested (using sphinx doctests). All the things combine together, it becomes localhost:9001/3.0. _______________________________________________ Mailman-Developers mailing list -- mailman-developers@python.org To unsubscribe send an email to mailman-developers-le...@python.org https://mail.python.org/mailman3/lists/mailman-developers.python.org/ Mailman FAQ: https://wiki.list.org/x/AgA3 Security Policy: https://wiki.list.org/x/QIA9