uncategorized 9 min
MXLookup Tool – Check MX Records Online Instantly
For successful email delivery, there’s one essential aspect you must get right: the MX records of your domain.
Tag
dns record
130 articles from DMARC Report.
uncategorized 13 min
How To Read DMARC Reports: Turn Complex Data Into Actionable Insights
To read DMARC reports and turn complex data into actionable insights, extract the key RUA/RUF XML fields (policy, source IPs, SPF/DKIM results, alignment.
uncategorized 12 min
How Can I Set Up A DMARC Policy That Works Well With Gmail For My Domain?
To set up a DMARC policy that works well with Gmail for your domain.
uncategorized 12 min
Phishing in the Age of AI: Why DMARC Is the First Line of Defense Against Next-Generation Email Threats
In January 2024, a finance employee at Arup, one of the world’s largest engineering firms.
uncategorized 7 min
What Is An MX Record In DNS? How It Works And Why It Matters
An MX record (Mail Exchange record) is a DNS resource record that tells the world which mail server is responsible for accepting email on behalf of a domain.
uncategorized 7 min
Which Type Of DNS Record Identifies An Email Server? A Simple Guide
In the Domain Name System (DNS), the DNS record that identifies an email server for a domain is the MX record - short for mail exchange record.
intermediate 6 min
How to Generate a DMARC Record for Subdomains: sp= Tag Guide
Complete guide to DMARC subdomain policies. Learn how the sp= tag works, when to use dedicated subdomain records, and common patterns for marketing subdomains vs production domains.
intermediate 5 min
How to Add a DMARC Record in Cloudflare: Step-by-Step DNS Guide
Complete walkthrough for adding a DMARC record in Cloudflare DNS. Covers TXT record setup, policy selection, reporting configuration, and verification using free tools.
intermediate 5 min
How to Check a DMARC Record Using Command Line (dig & nslookup)
Step-by-step guide to checking DMARC records from the command line using dig on Linux/macOS and nslookup on Windows. Includes output interpretation and troubleshooting.
foundational 10 min
What are the best practices to follow when generating a DMARC record for a high-volume mailer?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is Baiting in Cybersecurity? Techniques, Real Examples, and Protection Strategies
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
Why DMARC Is Necessary For Enterprises
As of 2025, DMARC is mandatory under multiple compliance frameworks. CISA BOD 18-01 requires p=reject for US federal domains. PCI DSS v4.
foundational 6 min
What Is a DNS A Record and How to Add One (Complete Guide by DMARCReport)
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
What are the risks of implementing strict DMARC alignment too quickly?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is ARP Spoofing and How to Prevent It
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 10 min
What are the best tools for checking DMARC alignment across multiple domains?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
What are the common signs that a DMARC analyzer could resolve my email spoofing problems?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
What Is Angler Phishing And How Can You Avoid It?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
What Is a Zero-Day Exploit and How Can You Prevent It?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
What Is a Trojan and How Does It Work?
A Cybersecurity Guide by DMARCReport The shift to mandatory email authentication in 2024-2025 was the biggest change in email security in a decade.
foundational 7 min
What Is a Password Attack in Cyber Security?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 7 min
What Is a DMARC Failure Report? A Complete Guide by DMARCReport
DMARC failure means an email from your domain failed both SPF alignment and DKIM alignment checks.
foundational 5 min
Mail Check and Web Check to No Longer Be Available as NCSC Announces Retirement
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
foundational 6 min
Phishing in 2025: A DMARCReport Perspective on Trends, Risks, and Defense
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
What are the most common reasons a DMARC DNS record fails to be recognized by receivers?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
Beyond SPF and DKIM: Why a DMARC Check Matters More Than Ever
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
No SPF Record Found - What It Means, Why It Matters & How to Fix It
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 11 min
How a DMARC Record Stops Phishing and Domain Abuse
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 6 min
Understanding URL Manipulation & URL Rewriting – A DMARCReport Guide
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
DMARC Report Monitoring Made Simple for Growing Businesses
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 7 min
What Is an SOA Record in DNS? A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
Why should organizations consider deploying a DMARC analyzer before enforcing a DMARC policy?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
How to Fix Gmail DMARC Errors and Improve Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How to Safeguard Your Domain Reputation Using DMARC Authentication
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
How to Check a Link for Phishing - by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
Which reporting formats and tools are best for analyzing DMARC alignment reports?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
Understanding the Top 8 Most Common DNS Record Types - A Comprehensive Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
Why are DKIM keys important for email deliverability and anti-spoofing?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 10 min
How does DKIM verification differ from SPF and DMARC in protecting email?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
What is the difference between a DKIM selector and a domain when checking DKIM?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 10 min
Which DNS providers make it easiest to add a DMARC record?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Mastering Mailchimp Email Authentication: A Complete Step-by-Step Guide
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
Where should I publish my DMARC record in my domain's DNS?
at the host dmarc.yourdomain (for example, dmarc.example.com) in your authoritative DNS, and optionally at dmarc.sub.
foundational 10 min
What are common mistakes people make when setting up DKIM TXT records?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 5 min
How to Create a TXT Record and Add It to DNS
In today’s digital world, websites and email domains rely on the Domain Name System (DNS) to connect infrastructure, prove ownership, and secure communications.
foundational 6 min
The Complete DMARCReport Guide: Configuring DKIM with OpenDKIM on Your Postfix Mail Server
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How does a required DKIM selector improve email security and deliverability?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
How to Conduct an Email Investigation - A Comprehensive Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
Why should a business consider using custom DKIM for its email sending?
A business should use custom DKIM because it provides domain-aligned authentication that boosts deliverability and brand trust.
foundational 11 min
What are common signs that DKIM is not working for outgoing mail?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 7 min
How Phishing Scammers Get Your Email Address - and How DMARCReport Can Help You Stop Them
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
How can I generate and interpret DMARC aggregate reports for G Suite?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 6 min
Why Google, Yahoo, Microsoft, and iCloud Are Enforcing Stricter Email Authentication Standards
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
How can I perform a DKIM lookup for my domain to verify my email authentication?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 7 min
Configuring WP Mail SMTP for Authenticated WordPress Emails
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
How to Add a DKIM Record to Cloudflare - A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
How a DKIM Replay Attack Successfully Spoofed Google - A Deep Dive
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 5 min
FreshMail DKIM & SPF Setup - A Complete Guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 11 min
What is a DMARC record and why does it matter for my email security?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 6 min
How to Fix “External Verification Failure” - A Complete Guide by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 12 min
Setting Up DMARC for Stronger Email Authentication and Trust
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Ultimate DreamHost DMARC Setup Guide - By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
DMARC: A Comprehensive Guide to Protect Your Domain - by DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How can DMARC improve email deliverability and reduce phishing risks?
According to the FBI's 2022 Internet Crime Report (IC3), 300,497 US-based victims reported phishing incidents in a single year.
foundational 10 min
How can I create a DMARC record for my domain to stop email spoofing?
Creating a DMARC record takes 5 minutes: publish a DNS TXT record at dmarc.yourdomain.
foundational 12 min
How can I implement DMARC for multiple domains and subdomains?
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 5 min
Barracuda SPF & DKIM Configuration - A DMARCReport Guide
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 8 min
A Records Vs. Alias Records - A Guide By DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 9 min
Answering Your Webinar Questions: Email Security - From The Desk Of DMARCReport
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 12 min
Best DMARC Checker Tools Comparing Dmarcian, Mxtoolbox, And Proofpoint
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
Best Tools For Generating DMARC Records For Small Businesses With Minimal It Staff?
For small businesses with minimal IT staff, the best DMARC record generators are GUI-based wizards - especially DMARC Report’s DMARC Wizard - alongside dmarcian.
foundational 11 min
7 Easy Steps To Verify An Spf Record Using Nslookup Properly
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 12 min
10 DNS Blacklist Insights That Improve Email Security And Deliverability Fast
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 11 min
Ensure Email Authentication With A Domain Health Report Featuring Advanced Dmarc Insights
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 11 min
Understanding DKIM Subdomains: Strengthen Your Email Authentication For Better Domain Protection
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 5 min
Email Security Meets Cybersecurity. Understanding the Role of DMARC Reports
Email has become an integral part of our everyday lives. Both personal and professional.
foundational 5 min
SPF format checker; Do’s and don’ts for email authentication
DMARC is the only email authentication protocol that gives you both enforcement and visibility, says Brad Slavin, General Manager of DuoCircle.
foundational 10 min
Enhance Email Authentication Using SPF Outlook For Safer Professional Communication
In today’s digital business landscape, email remains a primary communication channel - but also a frequent target for cyber threats such as phishing and spoofing.
foundational 12 min
Adding SPF Records To Your Domain For Outlook Email Authentication
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 10 min
How To Use Mxtoolbox Dmarc Analyzer For Effective Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Top 5 DMARC MTA Solutions to Enhance Your Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 11 min
Step-By-Step Guide To Configuring Google Apps SPF Records
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 7 min
How to Implement DNSSEC: Best Practices and Setup Tips
DNS Security Extensions (DNSSEC) play a crucial role in strengthening the security of the Domain Name System, which serves as the backbone of the internet.
foundational 11 min
Amazon SES SPF Record Explained: Best Practices For Email Authentication
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 11 min
Understanding SPF Fail Handling In Exchange Online: Tips And Best Practices
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 12 min
Improve Your Domain’s Email Security By Checking Dmarc Compliance
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 10 min
How To Set Up And Configure Microsoft 365 SPF Records For Email Security
Per RFC 7208, SPF evaluation is capped at 10 DNS mechanism lookups and 2 void lookups per check.
foundational 11 min
Setting Up SPF, DKIM, And DMARC Records For Enhanced Security In Exchange Server
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 6 min
What is a DKIM record? A complete guide to setup, mistakes, and DMARC alignment
DKIM is the authentication protocol that survives email forwarding, says Brad Slavin, General Manager of DuoCircle.
foundational 13 min
Authoritative vs Recursive DNS: Understanding the Key Differences
Navigating the internet is like exploring a vast city filled with countless destinations, but what happens when you don't have a map?
foundational 16 min
How to Add HubSpot SPF, DMARC, and DKIM for Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Essential Tools for Verifying and Configuring Proxy Connections
Whether you're managing multiple social media accounts, scraping data ethically, or just looking to enhance your privacy online.
foundational 10 min
What Is a DNS PTR Record? A Complete Explanation and Guide
In the digital landscape we navigate daily, understanding the intricacies of how information gets from one point to another can feel a bit like trying to.
foundational 10 min
What is a DNS CNAME Record? Understanding Its Usage and Configuration
In a digital world where every click counts, understanding the tools behind our online experiences is essential.
foundational 10 min
What Is a PTR Record? Understanding Its Importance in DNS Lookup
The engineering challenge with DMARC at scale is report volume, not complexity, says Brad Slavin, General Manager of DuoCircle.
foundational 13 min
Email Salting Attacks: How They Work and Prevention Techniques
In the realm of cyber threats, email salting attacks have emerged as a stealthy and sophisticated tactic that can catch even the tech-savviest among us off.
foundational 13 min
What is AAAA DNS? Understanding IPv6 Records and Their Importance
In the ever-evolving landscape of the internet, the way we connect and communicate is rapidly changing.
foundational 14 min
How To Stop Spoofing Emails: Effective Security Techniques To Prevent Phishing
Email spoofing is trivially easy without DMARC enforcement - any attacker can forge the From header to make an email appear to come from your domain.
foundational 5 min
DKIM in TXT or CNAME record - which one is better?
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 6 min
Why the Payment Card Industry (PCI) encourages SPF, DKIM, and DMARC
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 15 min
DKIM TXT Records: How to Properly Configure Your Email Authentication
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 15 min
DKIM Examples: A Comprehensive Guide to Email Configuration
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 13 min
DMARC Report Analyzer Open Source: Analyze and Improve Your Email Security
DMARC (RFC 7489) ties SPF and DKIM together by requiring alignment between the envelope sender and the visible From header.
foundational 14 min
How to Create a DMARC Record in GoDaddy for Enhanced Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 9 min
DKIM Best Practices: Essential Guidelines for Email Authentication
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 10 min
Can You Have Multiple DMARC Records? A Complete Guide for Domain Configuration
One Domain, One DMARC Record: Overview DMARC, or Domain-based Message Authentication, Reporting & Conformance.
foundational 12 min
DKIM Setup on Bluehost: A Step-by-Step Email Configuration Guide
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 14 min
Add TXT Record on Namecheap: A Complete DNS Guide
Adding a TXT record in Namecheap might sound complicated, but it plays a crucial role in managing your domain’s online presence.
foundational 17 min
How To Add Your Domain To HostGator: A Step-by-Step Guide
Adding a domain to HostGator can feel like a daunting task, especially if you’re new to web hosting. But don’t worry!
foundational 15 min
No DMARC Record Found? Here's How to Fix Your Domain's Email Security
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
Car Cameras Hackable, UK Water Breach, Thailand Frees Captives
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 6 min
What is a DKIM signature, and how does it help filter emails?
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 8 min
What is DMARC compliance and how can you achieve it?
Compliance is driving a lot of the DMARC adoption we see, says Vasile Diaconu, Operations Lead at DuoCircle. PCI DSS v4.
foundational 5 min
Security requirements for Gmail
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 3 min
Key aspects of DMARC interoperability
The organizations that invest in email authentication early save themselves from expensive incidents later, says Vasile Diaconu, Operations Lead at DuoCircle.
intermediate 3 min
Setting DKIM keys for Salesforce
DKIM is the authentication protocol that survives email forwarding, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
What is MTA-STS and why do you need it to improve email security?
From a product strategy perspective, DMARC reporting is evolving from a security tool to a business intelligence platform, says Brad Slavin, General Manager of DuoCircle.
intermediate 4 min
Does DKIM break for forwarded emails and mailing lists?
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
Understanding credential phishing and the role of DMARC in defense
The support tickets we get after a spoofing incident all start the same way: 'we didn't know someone was sending email from our domain,' says Vasile Diaconu.
intermediate 3 min
Learning to Configure SPF for Amazon SES
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
intermediate 5 min
How to Set Up DKIM in Amazon SES?
DKIM (RFC 6376) signs email messages cryptographically, and unlike SPF, the signature survives email forwarding.
foundational 5 min
DMARC Setup Stage 1- Preparation
The most common mistake we see during DMARC setup is jumping straight to p=reject without monitoring first, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
How Will Google and Yahoo’s New Sender Requirements Impact European Businesses?
Email authentication directly impacts deliverability: Google and Yahoo's February 2024 bulk sender requirements enforce SPF + DKIM + DMARC as hard.
foundational 5 min
Reasons Why You Aren’t Receiving DMARC XML Reports
DMARC reporting without automation is like watching security cameras without recording, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
What is the Difference Between Email Authentication and Email Encryption?
MTA-STS is the protocol most organizations forget about, says Adam Lundrigan, CTO of DuoCircle.
foundational 6 min
Why DNS Matters in Email Security?
The engineering challenge with DMARC at scale is report volume, not complexity, says Brad Slavin, General Manager of DuoCircle.
foundational 5 min
DMARC Best Practices for Domains and Subdomains
Email authentication isn't just about preventing spoofing - it's about trust, says Vasile Diaconu, Operations Lead at DuoCircle.
foundational 5 min
Gmail and Yahoo Email Error Codes Explained
DMARC monitoring should be as routine as checking your inbox, says Adam Lundrigan, CTO of DuoCircle.
foundational 5 min
How do DMARC, SPF, and DKIM Work in Tandem to Provide Email Security?
The three core email authentication standards - SPF (RFC 7208), DKIM (RFC 6376), and DMARC (RFC 7489).
foundational 4 min
DMARC Tags – Learn What they Are and Why You Need to Use Them
DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that improves the SPF and DKIM protocols.