What is the recommended DNS record syntax for a DMARC record used with Office 365?

What is the recommended DNS record syntax for a DMARC record used with Office 365?

ByBrad Slavin

Publish a TXT record at _dmarc.yourdomain.com with the value “v=DMARC1; p=none; rua=mailto:rua@dmarcreport.com; ruf=mailto:ruf@dmarcreport.com; fo=1; pct=100; adkim=r; aspf=r; sp=none” to begin DMARC monitoring for Office 365 safely and effectively. DMARC (Domain-based Message Authentication, Reporting and Conformance) builds on SPF and DKIM to tell receivers how to handle messages that fail authentication. In an Office 365 tenant,…

How can I set up DMARC for my Google Workspace domain without breaking delivery?

How can I set up DMARC for my Google Workspace domain without breaking delivery?

ByBrad Slavin

To set up DMARC for your Google Workspace domain without breaking delivery, publish SPF (v=spf1 include:_spf.google.com ~all), generate and enable 2048‑bit DKIM in the Google Admin console, start with DMARC at p=none with rua/ruf to DMARCReport for monitoring, fix and align all third‑party senders via DKIM or aligned SPF, then progressively move to quarantine and…

DMARC: A Comprehensive Guide to Protect Your Domain — by DMARCReport

DMARC: A Comprehensive Guide to Protect Your Domain — by DMARCReport

ByBrad Slavin

Email security is among the most critical aspects of modern digital communications. Every year, organizations lose money, time, and reputation due to email fraud, phishing attacks, and domain spoofing. Studies show that even small breaches can cost businesses tens of thousands of dollars, while larger enterprises can lose millions per incident. With email-based threats rising…

How can DMARC improve email deliverability and reduce phishing risks?

How can DMARC improve email deliverability and reduce phishing risks?

ByBrad Slavin

DMARC improves deliverability and reduces phishing by enforcing domain-aligned authentication (SPF/DKIM) that mailbox providers trust to place legitimate emails in the inbox while blocking or quarantining spoofed messages at scale. DMARC—Domain-based Message Authentication, Reporting, and Conformance—adds a policy and reporting layer on top of SPF and DKIM so receivers can verify that a message claiming…

How can I create a DMARC record for my domain to stop email spoofing?

How can I create a DMARC record for my domain to stop email spoofing?

ByBrad Slavin

To stop email spoofing, create and publish a TXT record at _dmarc.yourdomain.com with a value like v=DMARC1; p=reject; rua=mailto:dmarc-reports@yourdomain.com; ruf=mailto:dmarc-forensics@yourdomain.com; adkim=s; aspf=s; pct=100; fo=1; ri=86400 only after verifying that all your senders pass SPF and/or DKIM in alignment with your From domain. DMARC (Domain-based Message Authentication, Reporting, and Conformance) lets domain owners tell receivers how…

How can I implement DMARC for multiple domains and subdomains?

How can I implement DMARC for multiple domains and subdomains?

ByBrad Slavin

Implement DMARC for multiple domains and subdomains by standardizing a DNS template (SPF, DKIM, DMARC), inventorying all sending services, using parent-level inheritance with the DMARC sp tag where appropriate, centralizing rua/ruf reporting, rolling out p=none then gradually enforcing per domain (quarantine → reject) based on report-driven confidence, automating DNS and DKIM key management via APIs/IaC,…

Barracuda SPF & DKIM Configuration — A DMARCReport Guide

Barracuda SPF & DKIM Configuration — A DMARCReport Guide

ByBrad Slavin

By DMARCReport — practical, vendor-specific guidance to make your email authentication reliable and DMARC-ready. Getting SPF and DKIM right for traffic that routes through a Barracuda appliance is one of the quickest wins you can make to reduce spoofing, stop spam that appears to come from your domain, and help your DMARC policy work as…

A Records Vs. Alias Records — A Guide By DMARCReport

A Records Vs. Alias Records — A Guide By DMARCReport

ByBrad Slavin

When managing a domain, one of the choices you’ll face is how to configure your DNS (Domain Name System) records. Two of the most important and commonly confused record types are A records and Alias records. Though they may seem similar, they behave differently — and choosing the right one can make a big difference…

Answering Your Webinar Questions: Email Security — From The Desk Of DMARCReport

Answering Your Webinar Questions: Email Security — From The Desk Of DMARCReport

ByBrad Slavin

In our recent webinar titled “From Setup to Success: Secure Your Emails with DMARCReport,” we explored essential aspects of email security, with a deep dive into authentication protocols and best practices. The session was rich in content and attracted many participants; yet, we couldn’t cover all questions during the live Q&A. In this post, DMARCReport…

Best DMARC Checker Tools Comparing Dmarcian, Mxtoolbox, And Proofpoint

Best DMARC Checker Tools Comparing Dmarcian, Mxtoolbox, And Proofpoint

ByBrad Slavin

The best DMARC checker depends on your goals: choose dmarcian for deep DMARC-specific analytics and guided rollout, MXToolbox for fast diagnostics and budget-friendly monitoring, Proofpoint for enterprise-scale enforcement with threat intelligence, and consider DMARC Report to bridge gaps with scalable parsing, automation, and cost efficiency across SMB to multi-domain enterprises. DMARC (Domain-based Message Authentication, Reporting…