uncategorized 12 min
Best Email Authentication Platforms for PCI DSS v4.0 Compliance in 2026
Quick answer: PCI DSS v4.0 Requirement 5.4.
Blog
Expert guides on SPF, DKIM, DMARC, and email security.
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 8 min
Recipient Address Rejected: Access Denied, Fix SMTP 550 5.7.1 Errors
When you get a 550 5.7.1 non-delivery report, the mail system is saying “recipient address rejected” or “access denied” because the receiving server enforc
uncategorized 20 min
The State of DMARC Adoption in 2026:938,000 Domains Have DMARC Records, But Only 9% Are Actually Protected
Here is a number that should alarm every IT leader, business owner, and security professional reading this: in 2025.
uncategorized 5 min
How To Set Up SPF, DKIM, And DMARC For Your Domain?
Cyberattacks have become so frequent and sophisticated that it is nearly impossible to completely evade them.
uncategorized 5 min
Swedish Plant Hacked, UAE 800,000 Cyberattacks, Apple Alerts Exploited
Cybersecurity roundup: a state-sponsored attack on a Swedish thermal plant, 800,000 cyberattacks against the UAE, iPhone notification abuse for phishing, and a Massachusetts hospital breach.
uncategorized 15 min
DMARC Compliance Mandates: How Government and Industry Regulations Are Making Email Authentication Mandatory
Two years ago, DMARC was a best practice. Today, it is increasingly a compliance requirement.
Foundational 16 min
DMARC Aggregate Reports Explained: The Complete Guide to RUA Reports
Everything you need to know about DMARC aggregate reports (RUA). How to read them, what the XML fields mean, common issues, and how to turn raw data into actionable insights using DMARC Report.
Foundational 15 min
DMARC for Gmail and Google Workspace: The Complete Guide
Complete guide to configuring DMARC, SPF, and DKIM for Gmail and Google Workspace. Covers Google's sender requirements, admin console setup, troubleshooting, and ongoing monitoring.
Foundational 14 min
DMARC for Office 365: The Complete Guide to Microsoft 365 Email Authentication
Complete guide to configuring DMARC, SPF, and DKIM for Microsoft 365 (Office 365). Covers Microsoft's enforcement rules, Exchange Online setup, troubleshooting, and ongoing monitoring.
Foundational 16 min
DMARC Policy Guide: The Complete Journey from None to Quarantine to Reject
The complete guide to DMARC policy progression. Covers p=none monitoring, p=quarantine enforcement, and p=reject full protection, with timelines, decision criteria, and common mistakes at each stage.
Foundational 14 min
DMARC Setup Complete Guide: From Zero to Full Protection
The definitive guide to setting up DMARC from scratch. Covers DNS record creation, SPF and DKIM prerequisites, policy progression from p=none to p=reject, and ongoing monitoring with DMARC Report.
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
Email Authentication and Deliverability: How SPF, DKIM, and DMARC Enforcement Directly Impacts Your Inbox Placement Rates
Email marketing delivers an average return of $36 to $42 for every dollar spent, consistently outperforming paid ads, social media.
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 16 min
The Cost of Email Spoofing: Quantifying Business Email Compromise Losses by Industry, And the ROI Case for DMARC Enforcement
Business Email Compromise is not a sophisticated zero-day exploit. It does not require nation-state resources or advanced malware.
uncategorized 14 min
DMARC For G Suite Domains: Improve Email Trust And Inbox Placement
To improve email trust and inbox placement for G Suite (Google Workspace) domains, implement aligned SPF, DKIM, and DMARC across all sending sources.
uncategorized 6 min
Sending Secure And Encrypted Emails In Outlook: Here’s What It Takes
Sending Secure And Encrypted Emails In Outlook: Here’s What It Takes
uncategorized 8 min
Piggybacking Attack: Understanding Piggybacking In Cybersecurity
In cybersecurity, piggybacking describes an adversary attaching their unauthorized activity onto an authorized channel, process, or identity to bypass controls.
uncategorized 12 min
How To Interpret DMARC Alignment Results In Aggregate And Forensic Reports?
To interpret DMARC alignment results in aggregate and forensic reports.
uncategorized 5 min
$20M Phishing Bust, Pension Scam Alert, Booking Data Breach
A phishing ring behind a $20M fraud operation has been busted. Plus, pension scam alerts and a major Booking.com data breach affecting customer records.
uncategorized 20 min
DMARC Report Analyzers in 2026: Why They Matter More Than Ever, What the Data Really Says, and How to Take Action Today
A data-driven guide backed by 37 primary-source statistics from government PDFs, academic research, industry reports, and official standards bodies.
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.
Advanced 8 min
DMARC Enforcement Timeline: Realistic Roadmap from p=none to p=reject
A realistic DMARC enforcement timeline showing how to move from p=none to p=reject. Covers each phase, minimum timelines, common mistakes, and how monitoring dashboards track readiness.
Intermediate 10 min
How Can I Troubleshoot Gmail Bounce Messages That Mention DMARC Failures?
Fix Gmail 550 5.7.26 DMARC bounces by checking SPF/DKIM alignment and DNS records. 71% of bounces trace to SPF lookup overflows, fixable in 48 hours.
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 11 min
What Are the Best Features to Look for When Choosing a DMARC Report Analyzer?
The 10 essential DMARC analyzer features -- from scalable RUA/RUF ingestion to automated policy rollout -- that cut spoofing 87% and reach p=reject in 45 days.
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.