I created a post on cPanel. Hopefully they'll have some good answers come through on there.
https://support.cpanel.net/hc/en-us/community/posts/28706820128407-Mailman-on-cPanel-not-able-to-send-to-external-domains One issue I found is it could be the host is blocking the outgoing port that Mailman uses. So I'm asking my hosting provider about that possibility. Grace and Peace, Jeff ------------------------------------------------------ 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/ Member address: arch...@mail-archive.com