Microsoft one among the major email platform provider begins strictly enforcing email authentication protocols for domains that are sending over 5,000 emails per day. This means most of the enterprises across verticals are under this criteria, and may need action.
This major update is part of Microsoft’s broader push to reduce spam, combat phishing, and improve email security.
If your organization is a high-volume sender and you’re not compliant with Microsoft’s new standards, your emails could be automatically marked as junk—or even blocked/ rejected entirely. This applies to Outlook.com consumer service, which is supporting hotmail.com live.com and outlook.com consumer domain addresses.
So what exactly does this mean for your business?
The 3 Essentials for Email Authentication Compliance
To ensure uninterrupted email delivery, you would requires the following: These are however not something new to those who already have a matured email platform security practice in-place.
- DMARC (Domain-based Message Authentication, Reporting, and Conformance):
Protects your domain from being spoofed by cybercriminals and gives you visibility into how your domain is used.- At least p=none and align with either SPF or DKIM (preferably both).
- SPF (Sender Policy Framework):
Verifies that your emails are being sent from approved servers and IP addresses.- Must Pass for the sending domain.
- Your domain’s DNS record should accurately list authorized IP addresses/hosts.
- DKIM (DomainKeys Identified Mail):
Ensures the email content hasn’t been altered during transit and validates the sender’s identity.- Must Pass to validate email integrity and authenticity.
Also ensure the “From” or “Reply‐To” address is valid, reflects the true sending domain, and can receive replies.
May 5th, 2025, Outlook will begin routing messages from high volume non‐compliant domains to the Junk folder, giving senders an opportunity to address any outstanding issues. NOTE: that in the future (date to be announced), non-compliant messages will be rejected to further protect users.
What Happens If You’re Not Compliant?
Failure to meet these requirements can seriously harm your email performance and brand trust. Here’s what you could face:
- ❌ Emails sent to recipients’ spam or junk folders
- ❌ Loss of credibility and trust with email domain reputation
- ❌ Complete email rejections by Microsoft mail servers
How Teksalah Can Help Your Business Stay Compliant
At Teksalah, we understand that managing email compliance, DNS records, email protocols, and other data compliance standards can be complex and time-consuming. That’s why our solutions offer a fully managed email authentication systems designed to make compliance effortless.
With our active support & solutions, you get:
✅ Automated SPF, DKIM, and DMARC setup
✅ Real-time, human-readable reports
✅ Easy to manage platform
✅ Expert human support at every step
✅ Zero disruption to your mail flow
Get Expert Help from Teksalah Today
We’ll handle the entire process so you can focus on what matters most—running your business.
