PART 7,8,9 – SET UP MAILSERVER WITH POSTFIX (stop being marked as spam, block email spam, opendmarc)



Link to post 7: https://linuxloser.wordpress.com/2021/07/13/part8-7-effective-tips-to-stop-your-email-from-being-marked-as-spam/
Link to part 8: https://linuxloser.wordpress.com/2021/07/13/part9-7-effective-tips-for-blocking-email-spam-with-postfix-smtp-server/
Link to part 9: https://linuxloser.wordpress.com/2021/07/14/part10-set-up-opendmarc-with-postfix-on-debian-to-block-spam-email-spoofing/

source