Subhan Zafar
Subhan Zafar is an established IT professional with interests in Windows and Server infrastructure testing and research, and is currently working with Itechtics as a research consultant. He has studied Electrical Engineering and is also certified by Huawei (HCNA & HCNP Routing and Switching).
Windows 11 “Moment 5” Updates Finally Rolling Out With KB5036893
Windows 11 Moment 5 features are now available for everyone. Download the update here.
What Does “The DNS Record Type 99 (SPF) Has Been Deprecated” Mean And How To Fix It
The older SPF record type has been deprecated. This is how to change it to the newer, modern…
What Is The “550 SPF Check Failed” Error And How To Fix It
The problem might be at your end, and will probably need to reconfigure your SPF DNS records. Here…
What Is Email Backscatter And How To Prevent It
Bulk non-delivery reports are a sign of email spoofing. Protect your domain’s name with these simple yet effective…
New Gmail Policy Causes “Mail Is Unauthenticated” Bounceback Error – How To Fix It?
Gmail and Yahoo have updated their email deliverance policies, causing havoc in the bulk-email-sending world. Comply with their…
What Is The SPF “PermError Too Many DNS Lookups” And How To Fix It
Your domain’s SPF record might no need to be so big after all. Here is why the error…
What Is MTA-STS And How To Configure It For Email Security
SMTP communication is vulnerable to MITM attacks. Learn how MTA-STS keeps your email communication secure between mail servers…
What Is Brand Indicator Message Identification (BIMI) Record And Its Effect On Email Authentication
Want to improve your email deliverability and validity? BIMI might be the thing you need for bulk email…
DKIM vs. SPF vs. DMARC: What’s The Difference?
Confused how SPF, DKIM, and DMARC work together? This post will surely clear things up for you.
What Is Domain-Based Message Authentication Reporting And Conformance (DMARC) Policy & Reporting – A Comprehensive Guide
Email authentication requires several technologies, including DMARC. Here is how to understand DMARC records and configure them.