SMTP
8/15/2025 • 3 min readHow SMTP moves mail between servers and where it fits alongside IMAP/POP.
archive
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Email Authentication: SPF, DKIM, and DMARC
8/13/2025 • 3 min readIn-depth notes on email authentication, spoofing prevention, and policy configuration.
MTA-STS: Enforcing Secure Mail Delivery
8/14/2025 • 3 min readSecure SMTP delivery with strict TLS: what it is, why it exists, how to roll it out.
SMTP TLS Reporting (TLS-RPT)
8/16/2025 • 1 min readwhat TLS-RPT is, why it matters, and the minimal steps to enable it.
PGP + security.txt: Fast, Practical Notes
8/19/2025 • 4 min readOpenPGP basics, why to encrypt reports and sign what you publish, and how to cleartext-sign your security.txt.
Network Security: Foundations for SecOps
8/17/2025 • 3 min readPractical notes on segmentation, VPNs, proxies, OSI/TCP/IP, and why they matter in SecOps.