October 2026
6 posts from October 2026.
Your SSL Certificate Is About to Expire: What Actually Happens
What visitors see the morning a certificate lapses, why it catches owners out, and the ten-second check that prevents it.
What Is My IP Address, and Why Does Every Website Know It
Your IP address is the return address on everything you do online. What it reveals, what it never reveals, and when hiding it helps.
MX Records Explained by What Breaks Without Them
Missing, stale and half-dead MX records: the three ways email delivery breaks, and the order to check them in.
How to Read a WHOIS Record Like a Detective
Dates, registrar, status codes and nameservers: the five facts in every WHOIS record that actually tell you something.
The Port Check That Is Not Scary: Which Ports Should Be Closed
Ports are doors with numbers. Which ones a normal website needs open, which findings should worry you, and the five-minute routine.
Why Your Emails Land in Spam (and How to Check in 10 Minutes)
The five usual causes behind spam-folder delivery, and the two free checks that tell you which one is yours.