A different and less comprehensive recipe to compare with for Ubuntu: https://www.exratione.com/2014/07/setting-up-spf-and-dkim-for-an-ubuntu-1404-mail-server/

A different and less comprehensive recipe to compare with for Ubuntu: https://www.exratione.com/2014/07/setting-up-spf-and-dkim-for-an-ubuntu-1404-mail-server/ https://www.exratione.com/2014/07/setting-up-spf-and-dkim-fo...