Berkay Bulut
Posts

Beat the 10 Lookup Wall: Automated SPF Flattening with CI/CD or Workers (Without the Drama)
So there I was, late on a Thursday, staring at a perfectly innocent TXT record that had somehow turned our…

The Calm Way to Move: Zero‑Downtime cPanel‑to‑cPanel Migration with Account Transfer, Incremental rsync, and Smart TTLs
So there I was, late on a Wednesday evening, staring at two WHM dashboards like a chess player watching a…

Your Mail’s Secret Bodyguard: SMTP Security with MTA-STS, TLS‑RPT, and DANE/TLSA
So there I was, sipping the second coffee of the morning, when a client pinged me with the dreaded line:…

Ransomware‑Proof Backups with S3 Object Lock: The Friendly Guide to Versioning, MFA Delete, and Real Restore Drills
So, Can a Backup Really Be Ransomware‑Proof? I still remember the morning a client called with that tone you never…

PCI DSS for E‑Commerce, Without the Panic: What to Do on the Hosting Side
So there I was, staring at a late-night message from a store owner: “The payment gateway says I’m not compliant.…

Zero‑Downtime HAProxy: Layer 4/7 Load Balancing, Health Checks that Matter, Sticky Sessions that Behave, and Clean TLS Passthrough
So there I was, staring at a slow‑moving progress bar on a Friday release, knowing full well that one wrong…

My Friendly Playbook for rclone to S3/Backblaze B2: Encryption, Lifecycle, and Glacier Moves That Cut Backup Costs
Ever had that moment when the storage bill lands in your inbox and you quietly swear your backups have been…

I Built My Own Mail Server: Postfix, Dovecot, rspamd, and the Calm Path to Deliverability (with IP Warm‑Up)
So there I was, staring at a flood of logs on a late Tuesday evening, realizing I had built myself…

Beyond p=none: The Friendly Playbook for Advanced DMARC, RUA/RUF Analysis, and BIMI That Actually Works
So there I was, coffee in hand, scrolling through DMARC aggregate reports like they were morning headlines, when I spotted…
