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  • DDNS explained: Tutorial, usage, and importance for homelabs

    Understanding DDNS, CGNAT, and network accessibility for homelabbers

    Learn how DDNS helps with dynamic IPv4 addresses, why Carrier-Grade NAT blocks DDNS, and how to check your network and troubleshoot DNS issues.

  • All mail protocols explained: SMTP, IMAP, STARTTLS, etc.

    A practical guide to email server ports and their specific roles

    This article explains common email ports/protocols, and their usage today. Get practical examples for setting up and understanding the underlying technology.

  • Introducing HexName: A practical approach to subdomain management

    Understand what our service does and how it works

    HexName is a DNS and dynamic DNS service that allows users to register subdomains, manage advanced DNS records, and host real-world services reliably.

  • What is MTA-STS and how to set it up effortlessly

    Understanding MTA strict transport security and its full syntax

    Learn how MTA-STS works to secure email transfer, with real-world examples, and potential risks without it. Discover insights for DNS and TLS reporting.

  • Essential DNS records for mailservers explained

    How to set up all essential DNS records for reliable mail delivery

    Learn which DNS records are required for a functional mailserver, what they do, and best-practices for A, AAAA, MX, SPF, DKIM, and DMARC records.

  • Why VPS providers block outgoing email ports by default

    Understanding default SMTP port restrictions on VPS hosting

    Many VPS providers block outgoing email ports to mitigate spam. We dive into how email spam has developed and best practices for avoiding landing in spam.