Hacker News
- Your own Debian Mail Server (part II): how to prove you are not a spammer https://scaron.info/blog/debian-mail-spf-dkim.html 96 comments
- Debian Mail Server, Part II: SPF and DKIM https://scaron.info/blog/debian-mail-spf-dkim.html 6 comments linuxadmin
Linked pages
- Newsletters spam test by mail-tester.com https://www.mail-tester.com/ 690 comments
- Gmail https://gmail.com 402 comments
- Why don't we do email verification in reverse? https://blog.yossarian.net/2022/08/20/Why-dont-we-do-email-verification-in-reverse 391 comments
- Creative Commons — Attribution 4.0 International — CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ 95 comments
- Postfix/SPF - Community Help Wiki https://help.ubuntu.com/community/Postfix/SPF 17 comments
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