SPF data are TXT records that happen to be included to DNS Zones so that you can specify the servers from which emails could be sent. At last, we reviewed some added settings you may want to configure to Enhance the performance within your virtual machine. In this tutorial, you https://aws-linux-support90000.thezenweb.com/the-smart-trick-of-linux-postfix-mail-server-setup-that-no-one-is-discussing-63689870