Robert Alexander's Tech Blog

Tracking domains that support MTA-STS

The end of an experiment

Measuring vulnerable SMTP configurations and defenses

Thoughts on .internal and gTLDs

Running a bunch of mail servers to audit email security

Reflecting on a year of running a free domain registration service

My blog now uses the Hugo blog framework

How do RSS Categories work in practice?

Could a modern look at RSS feeds and blogrolls help the small-web much like the fediverse is revitalizing community in social networks?

Why we need more to-do apps

Challenges facing the CAs and why we still trust them

A review of HSTS and HSTS preload list growth

A model for thinking about AWS EC2 on-demand and reserved pricing

Launching the getlocalcert.net service

When Name Constraints ain’t enforced