The Systems Brief
Notes from building and running software for small businesses.
Practical, specific, occasionally opinionated. The things I end up explaining on calls, written down once.
11 August 2026
Hosting
SPF, DKIM and DMARC in plain English
Why your invoices land in spam, and the three DNS records that fix it. No acronyms left unexplained.
14 July 2026
Hosting
What I learned moving 500 domains to Cloudflare
Bulk transfers, .au quirks, and the checklist I now use for every domain move.