#DMARC policy
8 related articles
·2 min
DNS Sale Record Proposal: Declaring Domain For-Sale Status via TXT Records
A new proposal suggests declaring domain for-sale status via DNS TXT records, enabling machine-readable domain trade information. This article analyzes its technical implementation, market impact, and risks.
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·3 min
SPF, DKIM, and DMARC Explained: A Complete Guide to Email Authentication Configuration
A detailed guide to SPF, DKIM, and DMARC email authentication mechanisms—covering how they work, configuration methods, and how they complement each other to improve deliverability and prevent phishing.
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·3 min
DANE/TLSA Record Mismatch Causing Silent Email Loss: From Packet Capture Troubleshooting to Root Cause Resolution
A real-world case study of silent email loss caused by DANE/TLSA record mismatch. From empty logs to tcpdump packet capture revealing TLS handshake failures, with TLSA update procedures and automation strategies.
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·3 min
13 Years After DMARC: Why 68.4% of Domains Still Don't Enforce Email Authentication
13 years after DMARC's release, 68.4% of domains still haven't set policies to quarantine or reject. This article analyzes DMARC deployment status, why adoption is slow, and the path from p=none to p=reject.
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·3 min
How to Assemble a Modern Email System with Off-the-Shelf Components: A Modular Architecture Guide
Learn how to assemble a modern email system using off-the-shelf services like Postmark, SendGrid, and Amazon SES, covering sending, receiving, authentication, and trade-offs around vendor lock-in and cost.
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Reverse Spam Filtering: Making Senders…
·2 min
Reverse Spam Filtering: Making Senders Earn Their Way Into Your Inbox
A radical rethink of spam filtering: using proof-of-work to make unknown senders pay a computational cost, fundamentally disrupting the spam economy. Deep dive into the technical principles, real-world challenges, and lessons learned.
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·6 min
OraAgent Hands-On Review: End-to-End Automation of Foreign Trade Prospecting Emails — From Finding Customers to Sending Emails in One Click
A hands-on review of how OraAgent (AI assistant Aura) automates the entire foreign trade prospecting email workflow: auto-searching customers, prioritizing quality leads, batch-generating personalized emails, and one-click sending to cut acquisition costs.
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Why DMARC's NP Tag Conflicts with DNSSEC
·3 min
Why DMARC's NP Tag Conflicts with DNSSEC
DMARC's np tag defends against non-existent subdomain spoofing, but may conflict with DNSSEC's denial-of-existence mechanism. Learn the root cause, real-world impact, and mitigation strategies.
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