Macs R We via Mailman-Users writes: > I use the v2 mailman that is supplied with cPanel (currently 2.2.0.16-2).
Note that as far as I know that product is still closed source, and we don't have access to the source code for it. You should communicate with your hosting service or cPanel directly. > I thought I had won by setting the flag that encapsulates incoming > mail as an attachment before rebroadcasting it to the community. I'm surprised that works for your users. When I introduced it, I thought it would be the best way to handle it, and MUAs would quickly learn to at least preview those when from a list, but in practice none did. Worse, Apple Mail for iOS provided no way to get at it at all. Have you had complaints about needing to manually view the attachment? > What I didn't realize was that I still had a problem with mail > initiated BY mailman -- for example, the automatic monthly "here is > your password" reminder. There doesn't appear to be any DKIM > information in it at all, and I can't find an option that might let > me tell it to add some. The quickest way to get some protection is to figure out what the IP address(es) of your outgoing SMTP gateway(s) is (are), and add an SPF record specifying them as allowed to send mail for your site. Most recipient sites will accept mail if the IP is allowed and the From address is aligned per DMARC. Mailman won't do DKIM. This is really the MTA's responsibility. Among other things, Mailman can't set up the DNS and acquire the certificates. Installing something like OpenDKIM and so protecting all of your mail is less than half of the effort required to install DKIM, and none of the maintenance (certificate renewal or rotation, etc). And Mailman can't do SPF at all -- that's purely a DNS function, and the Mailman host may not even be a relevant sender. -- GNU Mailman consultant (installation, migration, customization) Sirius Open Source https://www.siriusopensource.com/ Software systems consulting in Europe, North America, and Japan ------------------------------------------------------ Mailman-Users mailing list -- [email protected] To unsubscribe send an email to [email protected] 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/[email protected]/ https://mail.python.org/archives/list/[email protected]/ Member address: [email protected]
