Starting May 5, Microsoft will require DMARC.

Check if your domain is compliant.

The Skysnag Blog

Illustration representing Shadow IT with unauthorized devices and apps connected to a corporate network, highlighting cybersecurity risks and prevention strategies.
June 17, 2025

What Is Shadow IT and How to Stop It?

Shadow IT is more than a tech issue—it’s a growing business risk. From unsanctioned email senders to insecure third-party tools, find out what’s lurking in your stack and how to regain control.

Explore insights

"New Zealand government cybersecurity announcement graphic highlighting October 2025 deadline for strict DMARC email authentication enforcement, with a map of New Zealand and a shield lock icon."
June 10, 2025

New Zealand Sets October 2025 Deadline for Strict DMARC Enforcement

Graph showing ROI growth alongside a secured email icon, illustrating how DMARC implementation protects business profits through improved email security.
May 26, 2025

DMARC & ROI: Protecting Your Profits

"Infographic illustrating DMARCbis update with timeline markers, an email shield icon, and steps for organizations to prepare for enhanced email authentication standards."
May 15, 2025

DMARCbis Explained: The New DMARC Update and How to Prepare

“Verified brand logo with BIMI and blue checkmark displayed in email inbox for enhanced brand trust and authentication.”
May 15, 2025

BIMI Email Security and Engagement Benefits

"Discover why your emails are failing to reach inboxes and how to resolve delivery issues using SPF, DKIM, and DMARC for better email performance and trust."
May 6, 2025

Why Your Emails Are Not Being Delivered (And How to Fix It)

Guide to complying with Microsoft sender requirements to prevent 550 5.7.15 rejections. Ensure proper email authentication with SPF, DKIM, and DMARC for improved deliverability
May 5, 2025

How to Fix Microsoft Email Rejection Error 550 5.7.515

Learn what causes Microsoft email rejections with error 550 5.7.515. Understand authentication failures and how to resolve issues with SPF, DKIM, and DMARC for successful email delivery.
May 1, 2025

Microsoft Email Rejections Explained: 550 5.7.515 Authentication Failures

"Understand why AI-powered phishing attacks increase the need for strong email security. Discover how advanced threats bypass traditional filters and how authentication protocols like DMARC protect your domain."
April 30, 2025

Why AI-Powered Phishing Emails Make Strong Email Security Essential

Microsoft introduces new email sender requirements for Outlook. Ensure SPF, DKIM, and DMARC compliance by May 2025 to maintain deliverability and protect against spoofing and phishing threats.
April 3, 2025

Microsoft’s New Email Sender Requirements: What You Need to Know

UAE successfully blocks over 600 cyberattacks aimed at critical public and private sectors. Learn how national cybersecurity strategies are protecting vital infrastructure and sensitive data from evolving digital threats.
March 24, 2025

UAE blocks over 600 cyberattacks targeting critical sectors

Discover how to comply with the PCI DSS v4.0 2025 anti-phishing mandate using Skysnag. Learn key email security strategies, DMARC enforcement, and phishing protection best practices to safeguard payment data
March 11, 2025

PCI DSS v4.0.1 Countdown: How to Meet the 2025 Anti-Phishing Mandate with Skysnag

March 6, 2025

Upcoming NCSC Mail Check Changes and the Best Alternative