At Wed, 18 Jul 2018 19:33:20 -0700 Mark Sapiro <m...@msapiro.net> wrote:
> > On 07/18/2018 07:10 PM, Robert Heller wrote: > > > > Mailman only checks the From: header... > > > Not true. See my other reply in this thread. I mean it does not check things like the Received: headers *by default*. If the email part of the From: header is a list member address, Mailman will consider that the mail is from that member and pass the message on to the list, *even if the From: header is spoofed*. I expect that this is what happening with the OP. It is a common spammer hack: somehow get a list of member addresses (or really hack a member's E-Mail accoung or PC and go from there). Yes, Mail mail can be configured to check other headers, but this requires some configuration settings. > -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services hel...@deepsoft.com -- Webhosting Services ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org https://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: https://mail.python.org/mailman/options/mailman-users/archive%40jab.org