Use proactive alerts to prevent DMARC failures
Proactive alerts flag DNS changes, new senders, and lookalike domains to prevent DMARC failures, keep critical email flowing, and safeguard users.
Adopt DMARC without an in-house DNS expert
Learn how to adopt and enforce DMARC without an in-house DNS expert. Understand common SPF, DKIM, and DMARC pitfalls, and see how managed services reduce risk.
No DMARC record found: Fix this critical mistake
Seeing a “no DMARC record found” error for your domain? Learn what it means, how it exposes you to spoofing and BEC, and how to move safely to p=reject.
DMARC bypass: Attack methods & advised solutions
Learn how attackers bypass DMARC by exploiting gaps in SPF, DKIM, and Microsoft, and the steps you can take to stop spoofed email from reaching inboxes.
Email spammer bot: Risks and prevention
Learn what an email spammer bot is, how scraping works, and what DMARC does to protect your domain from abuse. Reduce risk and stop automated attacks.
NCSC is retiring Mail Check & Web Check in 2026
The NCSC is retiring Mail Check and Web Check. Learn what the change means, when it takes effect, and why Sendmarc’s platform is the ideal replacement.