What is the impact of DMARC on email deliverability for Office 365 users?

What is the impact of DMARC on email deliverability for Office 365 users?

ByBrad Slavin

Implementing DMARC in Office 365 measurably improves inbox placement and reduces spoofing by giving Exchange Online Protection (EOP) and Outlook strong, aligned authentication signals (SPF/DKIM), but misconfiguration or unenrolled third‑party senders can lead to legitimate messages being quarantined or rejected—so phased rollout and continuous monitoring are essential. DMARC (Domain-based Message Authentication, Reporting, and Conformance) sits…

How to Add a DKIM Record to Cloudflare — A Complete Guide by DMARCReport

How to Add a DKIM Record to Cloudflare — A Complete Guide by DMARCReport

ByBrad Slavin

In today’s digital world, email continues to be one of the most essential forms of communication for businesses. From customer support to marketing campaigns and internal workflow, email delivers critical messages every second. But as the volume of email grows, so do threats like phishing, spoofing, and spam. That’s where proper email authentication steps in…

How can I use a DMARC creator to generate a correct DMARC DNS record?

How can I use a DMARC creator to generate a correct DMARC DNS record?

ByBrad Slavin

Use a DMARC creator like DMARCReport by entering the required tags (v=DMARC1 and p), selecting optional tags (rua, ruf, adkim, aspf, sp, pct, fo), validating syntax/alignment and report routing, then publishing the generated TXT record at _dmarc.yourdomain with a staged monitoring-to-enforcement plan and ongoing report-driven tuning. Context and background: what a DMARC creator does and…

The Definitive Guide To Configuring SPF and DKIM for Salsa Labs
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The Definitive Guide To Configuring SPF and DKIM for Salsa Labs

ByBrad Slavin

In today’s email ecosystem, ensuring your messages are authenticated and trusted by mail servers is no longer optional: it’s mission-critical. Misconfigured email authentication is one of the leading causes of low deliverability, placement in spam folders, and spoofing attacks. That’s where SPF and DKIM come in: two foundational email authentication protocols that help protect your…

How a DKIM Replay Attack Successfully Spoofed Google — A Deep Dive

How a DKIM Replay Attack Successfully Spoofed Google — A Deep Dive

ByBrad Slavin

In today’s email threat landscape, phishing attacks have grown far more sophisticated than ever before. Gone are the days when scammers relied on bad grammar, obvious spoofed domains, or clearly malicious links. Modern attacks can mimic legitimate system alerts so convincingly that even tech-savvy users hesitate to dismiss them. One such evolving threat is what’s…

How can I implement a DMARC policy for domains using Gmail or Google Workspace?

How can I implement a DMARC policy for domains using Gmail or Google Workspace?

ByBrad Slavin

You implement a DMARC policy for a domain using Gmail/Google Workspace by configuring SPF and DKIM alignment for all senders, publishing a DMARC TXT record at _dmarc.yourdomain with monitoring (p=none, rua/ruf), analyzing reports, and then progressively enforcing p=quarantine and p=reject—using pct and sp for subdomains—while monitoring results in Google Admin/Postmaster Tools and DMARCReport. Implementing DMARC…

5 situations in which your DMARC policy should be ‘p=quarantine’

5 situations in which your DMARC policy should be ‘p=quarantine’

ByBrad Slavin

DMARC in monitoring mode provides visibility, but it is not sufficient. After all, visibility alone does not stop abuse. Once you know that there are unauthorized senders sending emails on behalf of your domain, continuing to monitor them without taking any preventive steps serves little purpose.  At this stage, it is important that you start…

How can a DMARC Analyzer help reduce phishing emails sent from my domain?

How can a DMARC Analyzer help reduce phishing emails sent from my domain?

ByBrad Slavin

A DMARC Analyzer like DMARCReport reduces phishing from your domain by enforcing SPF/DKIM alignment through DMARC policy, mapping and eliminating unauthorized senders with aggregate/forensic reporting, and guiding you—via dashboards, alerts, and automated policy recommendations—from monitor to quarantine/reject without disrupting legitimate mail. DMARC (Domain-based Message Authentication, Reporting & Conformance) is the control plane for email identity:…

FreshMail DKIM & SPF Setup — A Complete Guide

FreshMail DKIM & SPF Setup — A Complete Guide

ByBrad Slavin

If you send email marketing campaigns using FreshMail, you already know how powerful and flexible the platform is. However, to ensure your emails actually reach the inbox and don’t get blocked, flagged as spam, or rejected outright, you need to authenticate your domain properly. That’s where SPF and DKIM come in — two critical email…

What is a DMARC record and why does it matter for my email security?

What is a DMARC record and why does it matter for my email security?

ByBrad Slavin

A DMARC record is a DNS TXT policy that tells receiving mail servers how to handle emails that claim to be from your domain by verifying SPF/DKIM alignment, and it matters because it prevents spoofing, improves deliverability, and gives you visibility through reports to enforce authentication safely. DMARC (Domain-based Message Authentication, Reporting & Conformance) builds…

Cyberattack Shuts School, Cyber Scam Thwarted, JLR Faces Losses

Cyberattack Shuts School, Cyber Scam Thwarted, JLR Faces Losses

ByBrad Slavin

This is the first edition of the month, and we have curated the top four cyber incidents that you must be well-versed in. Cyber mishaps this week revolved around a data breach at Higham Lane School, a potential cyber scam that was prevented by a hacker, and Brightspeed’s customer data breach incident.  Meanwhile, the unfortunate…

How to Fix “External Verification Failure” — A Complete Guide by DMARCReport

How to Fix “External Verification Failure” — A Complete Guide by DMARCReport

ByBrad Slavin

Email authentication is no longer a luxury — it’s a critical part of protecting your domain from abuse, spoofing, phishing, and deliverability issues. At DMARCReport, we help thousands of organizations understand and resolve technical email security problems every day. One of the most common issues domain owners encounter when managing DMARC records is an error…

What are the basic components required to create a DMARC record?

What are the basic components required to create a DMARC record?

ByBrad Slavin

To create a DMARC record, you publish a DNS TXT record at _dmarc.yourdomain.com containing at least v=DMARC1 (this must be first) and p=(none|quarantine|reject), and you typically add optional tags like rua, ruf, pct, adkim, aspf, sp, fo, and ri to control reporting, alignment, rollout, and subdomain behavior. DMARC (Domain-based Message Authentication, Reporting, and Conformance) tells…

Understanding Proofpoint’s Inbound DMARC Handling — A DMARCReport Analysis

Understanding Proofpoint’s Inbound DMARC Handling — A DMARCReport Analysis

ByBrad Slavin

Email authentication standards like DMARC (Domain‑based Message Authentication, Reporting, and Conformance) have become indispensable in the fight against spoofing, phishing, and domain impersonation. Organizations rely on DMARC not only to protect their brand but also to ensure the authenticity of email traffic traversing the internet. At DMARCReport, we’re passionate about helping security teams, IT administrators,…

Setting Up DMARC for Stronger Email Authentication and Trust

Setting Up DMARC for Stronger Email Authentication and Trust

ByBrad Slavin

To set up DMARC for stronger email authentication and trust, correctly configure SPF and DKIM for every sending source, publish an initial monitoring DMARC policy (p=none) with aggregate/forensic reporting, analyze alignment and failure data, then progressively enforce to p=quarantine and p=reject while maintaining DKIM key hygiene and continuous monitoring. DMARC (Domain-based Message Authentication, Reporting, and…