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.
Knowledge Base
Blog
Expert guides on SPF, DKIM, DMARC, and email security.
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.
Foundational
How to Set Up SPF for BlueHornet: A Complete Guide
Set up SPF for BlueHornet with this complete guide. Learn how to configure SPF correctly, improve email deliverability, and prevent spoofing.
Intermediate
Protect Your Brand Online: Why Every Business Needs Protected Domain Services
Protect your brand with protected domain services that secure domains, prevent phishing, monitor DNS, and strengthen email authentication.
Intermediate
Why Is My Namecheap SPF Record Different From My Email Provider’s SPF Record?
Learn why your Namecheap SPF record differs from your email provider’s and how to configure SPF correctly for reliable email delivery.
Intermediate
What Is Email Header Parsing? How It Helps Troubleshoot SPF, DKIM & DMARC
Learn how email header parsing helps troubleshoot SPF, DKIM, and DMARC issues, trace message routes, detect spoofing, and improve email authentication.
Advanced
NetSolutions Blackbaud SPF Setup: How to Configure SPF for Blackbaud
Configure NetSolutions Blackbaud SPF correctly with this step-by-step guide to improve email authentication, deliverability, and domain security.
Intermediate
DMARC Verification Failed: Common Causes, Quick Fixes, and Verification Guide
Learn what causes DMARC verification failed errors, how to fix SPF, DKIM, and alignment issues, and how to verify DMARC authentication.
Intermediate
Domain Lookup for Email Troubleshooting: What Should You Check?
Use domain lookup to check DNS, SPF, DKIM, DMARC, MX records, and other settings to identify and resolve common email delivery issues.
Foundational
How to Add an SPF Record in 20i: A Step-by-Step Guide
Learn how to add, verify, and troubleshoot an SPF record in 20i to improve email authentication, security, and deliverability.
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