Yunes Tarada - PowerDMARC

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Yunes Tarada

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Domain & Email Security Expert at PowerDMARC

Yunes is an Operations Team Lead at PowerDMARC with expert knowledge in email authentication and security. Yunes is a Microsoft-certified Azure Administrator Associate with certifications in CompTIA A+ and many more.

Latest posts by Yunes Tarada (see all)

Spam Confidence Level (SCL) -1 Bypass: What It Means and How to Handle It - March 4, 2026
“Does Not Pass DMARC Verification and Has a DMARC Policy of Reject”: What It Means and How to Fix It - February 26, 2026
550 From Address Violates UsernameCaseMapped Policy: Causes & Fixes - February 11, 2026

The DNS record type 99 SPF Has Been Deprecated

How to Fix “The DNS record type 99 (SPF) Has Been Deprecated”?

You may have come across an SPF record warning “The DNS record type 99 (SPF) has been deprecated” because it was discontinued in 2014

How to Implement Mail Domain Authentication in Your Email Infrastructure

How to Implement Mail Domain Authentication in Your Email Infrastructure

Mail domain authentication ensures that the sender of the email is who they claim to be, and the recipient can trust the email.

How to Configure Single Sign On SSO with Microsoft Azure Active Directory

How to Configure Single Sign-On (SSO) with Microsoft Azure Active Directory?

Microsoft SSO is a user authentication process that allows you to operate multiple applications using a single account.

How to delegate a subdomain to another NameServer

How to delegate a subdomain to another NameServer?

In order to delegate a subdomain to another nameserver you need to identify the subdomain, create new zone file and NS record.

SPF Syntax A Complete Guide

SPF Syntax: A Complete Guide

This blog broadly speaks about the SPF syntax table, SPF mechanism, SPF qualifier, and SPF modifier

DKIM Selector2 Not Working for Microsoft 365 Domain 01

DKIM Selector2 Not Working for Microsoft 365 Domain

Microsoft Office 365 DKIM selector2 not working is a common error that can be quickly resolved by following the given instructions.