Email insecurity (was One of the great benefits of Open Source)

Posted Nov 7, 2025 17:14 UTC (Fri) by anselm (subscriber, #2796)
In reply to: Email insecurity (was One of the great benefits of Open Source) by paulj
Parent article: Debian to require Rust as of May 2026

These days you can get nifty oven-ready container-based email systems – usually based on Postfix, Dovecot, and the like –which will take care of that stuff for you. But even setting up SPF and DKIM from scratch isn't exactly rocket science. There are loads of web pages which explain how to do it, in easy-to-follow steps, and doing just that will take you a long way towards being able to send email wherever you like.

I've been running mail servers (on my own behalf and that of various companies and non-profits) and teaching other people how to do it for 30+ years now, and it's generally not something I'm losing any sleep over. As far as I'm concerned, claims like “you will struggle to have others receive email you send” are wildly exaggerated.