Intermediate
Outlook DMARC Requirements: Microsoft’s New Email Authentication Rules Explained
Learn Microsoft’s Outlook DMARC requirements, including SPF, DKIM, DMARC alignment, DNS setup, enforcement, and best practices for email delivery.
Knowledge Base
Blog
Expert guides on SPF, DKIM, DMARC, and email security.
Intermediate
DMV Breach Confirmed, Cisco ISE Patched, Revolut Data Scam
Cybersecurity news roundup covering the Florida DMV breach, Cisco ISE flaw, Revolut data leak, phishing campaigns, ransomware, and major cyberattacks.
Intermediate
Why am I still getting email spoofing warnings even though I have an SPF record on Bluehost?
Why do you still get email spoofing warnings with a Bluehost SPF record? Learn the common causes and how to fix SPF authentication issues.
Foundational
How to Check if Your Domain Is on an Email Blocklist
Check if your domain is on an email blocklist, understand why it was listed, and learn how to remove it to improve email deliverability.
Foundational
Phishing or Pharming? The Key Differences Every Email User Should Know
Learn the key differences between phishing and pharming, including attack methods, warning signs, DNS threats, and practical ways to stay protected.
Foundational
Honey Trap Scams Explained: How Social Engineering Targets Email Users
Learn how honey trap scams use social engineering, phishing, and emotional manipulation to target email users, plus practical tips to stay protected.
Advanced
What Is an SPF Void Lookup and How Can You Fix It?
Learn what an SPF void lookup is, why it occurs, how it affects email authentication, and practical ways to identify and fix SPF void lookup issues.
Foundational
How to Set Up an SPF Record for beget.ru
Learn how to set up an SPF record for beget.ru, configure DNS correctly, and improve email authentication, security, and deliverability.
Intermediate
Safe Email Marketing: 8 Email Authentication Best Practices
Explore 8 email authentication best practices to boost deliverability, prevent spoofing and phishing, protect your domain, and build customer trust.
Foundational
Baiting Attacks Explained: Email Risks and Prevention
Learn how baiting attacks exploit human curiosity through malicious emails, fake rewards, and downloads, plus prevention tips using SPF, DKIM, and DMARC.
Foundational
How to Set Up DKIM in Google Workspace: Step-by-Step Guide
Learn how to set up DKIM in Google Workspace with this step-by-step guide to authenticate emails, improve deliverability, and protect your domain from spoofing.
Intermediate
Microsoft Patch Tuesday , GitLab Flaw Exploited, ShinyHunters Used Claude
Stay updated on major cybersecurity threats from September 8–14, 2026, including Microsoft patches, GitLab exploits, AI hacking, and crypto theft.
Advanced
SubdoMailing Explained: How Subdomain Hijacking Enables Email Spoofing
Learn how SubdoMailing exploits subdomain hijacking to enable email spoofing, bypass authentication controls, and create serious email security risks.
Advanced
DMARC RFC 7489 Explained: The Standard Behind Email Authentication
Learn how DMARC RFC 7489 defines email authentication, SPF and DKIM alignment, policies, reporting, enforcement, and best practices for domain protection.
Advanced
How Does Microsoft 365 Perform SPF Evaluation for Incoming Email?
Learn how Microsoft 365 performs SPF evaluation for incoming email, checks sender authorization, and uses SPF results to help detect spoofing and email threats.
Foundational
How to Add webmailer.perfora.net to Your IONOS SPF Record
Learn how to add webmailer.perfora.net to your IONOS SPF record to improve email authentication, prevent spoofing, and support reliable email delivery.
Foundational
DNS NS Records Explained: Function, Setup, and SPF Examples
Learn what DNS NS records are, how they work, and how to manage nameservers, delegation, reliability, and SPF records for proper DNS resolution.
Foundational
When should I run an A record lookup as part of troubleshooting my DNS problems?
Run an A record lookup when troubleshooting DNS issues involving domain-to-IP resolution, website access, server connectivity, or unexpected DNS responses.
Intermediate
Email Sender Identity Explained: Why It Matters for Email Security
Learn how email sender identity works and how SPF, DKIM, and DMARC help prevent spoofing, phishing, impersonation, and unauthorized email activity.
Intermediate
Aurora Uses Cursor, Astra Creates Exploits, Enterprise Network Breached
Explore the top cybersecurity news from September 1–7, covering AI-powered attacks, zero-days, ransomware, phishing, BEC, and email security threats.
Foundational
Rocketseed Login and SPF Setup: A Step-by-Step Guide
Rocketseed login and SPF setup made easy with this step-by-step guide. Learn how to configure SPF correctly and improve email authentication.
Intermediate
What Does an SPF Record Tester Check Besides Your SPF Syntax?
Discover what an SPF record tester checks beyond syntax, including DNS lookups, mechanisms, qualifiers, and common configuration errors.
Intermediate
How to Detect Zip Bombs Hidden in Spam Email Attachments
Learn how zip bomb detectors identify malicious email attachments, prevent decompression attacks, and strengthen email security with SPF, DKIM, and DMARC.
Foundational
Dumpster Diving in Cybersecurity: How Discarded Data Becomes a Security Risk
Learn how dumpster diving exposes sensitive data and creates cybersecurity risks, from identity theft and phishing to social engineering and data breaches.
Intermediate
IRIS CRM Login and SPF Setup: A Step-by-Step Guide
Learn how to access IRIS CRM login and configure SPF records with this step-by-step guide for secure, reliable email authentication.
Intermediate
DMARC Compliance Requirements: Global Rules and Email Security Policies
DMARC compliance requirements strengthen email security, prevent spoofing and BEC, improve deliverability, and ensure proper authentication across domains.
Intermediate
Who Is Name Services Com? A Guide to Setting Up SPF for Enom
Set up SPF for Enom and learn who Name Services Com is, why it matters, and how proper SPF configuration improves email authentication and deliverability.
Advanced
Does SPF Hard Fail Reject Forwarded Emails? What Actually Happens
SPF hard fail can affect forwarded emails. Learn what happens during forwarding, why SPF may fail, and how DMARC and SRS help prevent rejection.
Intermediate
RUA vs. RUF in DMARC: Reporting Types, Differences, and Configuration
Learn the key differences between DMARC RUA and RUF, including reporting types, privacy concerns, use cases, and configuration best practices.
Intermediate
How to Set Up SPF for IBM SmartCloud Notes Using Collabserv
Learn how to set up SPF for IBM SmartCloud Notes using Collabserv, improve email authentication, and reduce spoofing and delivery issues.
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