Infrastructure
4 postsTechnical analysis and operational guides covering core internet infrastructure—with a heavy emphasis on email systems, DNS protocols, and network security. These articles explore authentication frameworks (SPF, DKIM, DMARC), resilience engineering, and secure system design to help technical teams build reliable, hardened infrastructure.
RSS feed
Paul O'Brien PHP2Shell: What Website Owners Need to Do Now Two critical flaws in PHP, the language behind WordPress and most of the web, were fixed on 21 October. Here’s what they are, how to check your site, and what to ask your host. Infrastructure5 min read 
Paul O'Brien Amazon SES Review: Pricing, Setup and Limits (2026) Amazon SES strips away SaaS markups to offer low-cost email infrastructure. This review covers the sandbox, DKIM and MAIL FROM setup, pricing and the bounce handling you have to build yourself. Amazon SES8 min read 
Paul O'Brien Starlink Standby Mode UK: Is £9 a Month Worth It? Starlink Standby Mode keeps your dish live at 0.5Mbps for £9 a month, double last year’s price. Here’s what that actually gets you, how it compares with a 4G backup, and why power is the catch nobody mentions. Business Continuity7 min read 
Paul O'Brien Cloudflare Email Routing Review 2026: Free, Now With Sending Cloudflare Email Routing gives your domain free, properly authenticated forwarding, and in 2026 Cloudflare finally added sending. Here’s what’s free, what now costs money, and when a real mailbox is the better call. Cloudflare7 min read 