Email News9 min read
What is an SPF record and why does it matter?
If you're involved in managing email deliverability for your tech company, you may have come across the term 'SPF record.' An SPF record, which stands for…
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Guides, product updates, and email security news from the Palisade team.
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Email News7 min read
How do I set up a DKIM record and verify it is signing?
Set up a DKIM record step by step: generate a 2048-bit key, publish the DNS TXT record, verify signing, and fix the errors that break DKIM.
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Email News8 min read
In-Depth Guide to Understanding and Implementing DMARC and DKIM
DKIM, or DomainKeys Identified Mail, is an email authentication method that associates a digital signature with an email message.
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Email Authentication11 min read
How to Set Up DKIM in Office 365 (Microsoft 365)
Set up DKIM in Office 365: publish both tenant-specific CNAME records, enable signing in Microsoft Defender, and verify DKIM in a delivered message.
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Security8 min read
Dumpster Diving: The Hidden Cyber Threat Lurking in Your Trash
Discover dumpster diving, a cyber threat exploiting discarded data, and learn secure disposal strategies.
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Email News5 min read
How to Flush DNS Cache on Mac, Windows & Linux
Clear your DNS cache in one command (macOS, every Windows version, and Linux distros) plus how to flush browser DNS and confirm it worked.
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Email News9 min read
How do I create a BIMI record step by step?
Set up BIMI step by step: enforce DMARC, create an SVG Tiny PS logo, choose a VMC or CMC, publish the TXT record, and troubleshoot display.
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Email News8 min read
Unmasking the Secrets of IP Spooking
IP spoofing lets attackers fake source addresses to bypass filters and launch attacks. Learn how it works and how to defend your network.
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Email News9 min read
SMS Spoofing: Understanding and Mitigating Risks
SMS spoofing lets attackers fake sender IDs in text messages. Learn how smishing works and how to protect your business and customers.
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Email News6 min read
DMARC Policy Not Enabled: How to Fix It Safely
Fix the DMARC policy not enabled warning: check the existing DNS record, verify sender alignment, then edit the policy in Cloudflare, GoDaddy, or your DNS host.
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Email News7 min read
The ABCs of DNS PTR Records
PTR records map your sending IP back to your hostname. Learn how reverse DNS and FCrDNS work, why Gmail and Outlook now enforce them, and how to set one up.
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Master Guides33 min read
Master Guide: Obtaining your blue verified Gmail checkmark
Gmail's blue checkmark needs DMARC enforcement, a BIMI record, an SVG Tiny PS logo, and a VMC. Setup steps, costs, timelines, and free checkers.
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