Articles - Page 5

December 2025

Diagram comparing DoH3, DoQ and DoT in a modern DNS architecture

CaptainDNS · December 1, 2025

DoH3, DoQ and DoT: everything changing by late 2025

Panorama of encrypted DNS transports at the end of 2025: performance, network impact, security, and an action plan for infra teams.

November 2025

Diagram of the CaptainDNS MCP architecture between ChatGPT, the MCP server, and the backend API

CaptainDNS · November 27, 2025

Behind the scenes of the CaptainDNS MCP

How we wired CaptainDNS to AIs through MCP: architecture, HTTP+SSE transport, JSON-RPC, 424 errors, timeouts, and what we learned along the way.

Diagram showing an AI host talking to CaptainDNS through a standardized MCP connector

CaptainDNS · November 21, 2025

An MCP for CaptainDNS?

Before plugging CaptainDNS into AIs, you need to understand what the Model Context Protocol (MCP) is and what it really enables. A short MCP ABC, then first steps for CaptainDNS.

BIMI October 2025: lps=, ABNF, SVG/SVGZ formats and headers

CaptainDNS · November 13, 2025

BIMI Draft -11 dated 9 October 2025: what's changing and how to prepare

Revision -11 formalizes Local-Part Selectors (lps=), clarifies the discovery path, reaffirms SVG/SVGZ logos and reiterates DMARC and header requirements.

CaptainDNS · November 13, 2025

BIMI logo cache: run a brand refresh and make the new logo show up everywhere

Your logo changed but inboxes still display the old one? It is not only a DNS issue: mailbox providers cache BIMI assets. Discover how the cache layers work and how to plan a smooth BIMI migration.

CaptainDNS · November 7, 2025

New in CaptainDNS: central history and continuous DNS monitoring

Diagnose, archive, share, then monitor: CaptainDNS now supervises the full lifecycle of a DNS query from the first lookup to automated watch jobs.

New Gmail rules 2025: bulk senders beware

CaptainDNS · November 6, 2025

Gmail tightens its sending rules: what's changing for senders starting November 2025

Starting in November 2025, Google enforces new security requirements for bulk senders: full SPF/DKIM/DMARC authentication, TLS encryption and strict unsubscribe management.

DKIM2: What's new, removals, timeline and impact

CaptainDNS · November 3, 2025

DKIM2: what's new, what's changing and key dates

Everything you need to know about DKIM2 at the end of 2025: principles, new headers, coexistence with DKIM/DMARC, the IETF draft timeline and a readiness plan.

October 2025

CaptainDNS · October 30, 2025

France's domains: the local digital divide

Behind 4.3M .fr domains, geography reveals a two-speed country: from 21 to 235 domains per 1,000 inhabitants depending on the department.

CaptainDNS · October 29, 2025

DMARCbis: every change (and how to get ready)

DMARCbis replaces RFC 7489, drops the PSL in favor of a DNS Tree Walk, adds 'psd', 'np' and 't', removes 'pct', 'ri' and 'rf', and splits reporting into two documents. Here's what it means...