Blog
Notes from the work.
Practical notes from SuperStack on running production systems. No client names, no employer names, and no rates.
21 October 2026
Setting up SPF, DKIM and DMARC properly
How SPF, DKIM and DMARC fit together, how to tighten them without blocking your own mail, and a public check for the domain.
20 October 2026
A sane Kubernetes deploy checklist
Limits, probes, image tags, privileges and a rollback you have actually tried, checked before a Kubernetes manifest goes out.
19 October 2026
Cutting AWS waste on a small account
Idle compute, unused addresses, old snapshots and forgotten network paths on a small AWS account, and a checklist that does not need a login.