Resources
Email News
Browse Palisade articles and guides in Email News.
Google is making email sender requirements stricter starting Nov 2025
What Gmail’s increased enforcement means for bulk senders and how to prepare: SPF, DKIM, DMARC, unsubscribe rules, and complaint rate targets.
Nov 7, 2025
What are this month's product updates MSPs need to know?
Monthly rundown for MSPs: Palisade rolled out AI email scanning, custom subdomains, a dynamic detection workflow, and a clearer security score.
Oct 3, 2025
How are MSPs ramping up security this summer?
Platform updates and product improvements MSPs should know now — rewritten for Palisade.
Oct 2, 2025
What Are the Best Email Security Practices for Businesses?
Discover essential email security best practices for businesses, including DMARC, DKIM, SPF, MFA, and employee training.
Oct 1, 2025
How can I configure SPF and DKIM for ChargeBee?
Learn how to configure SPF and DKIM for ChargeBee with detailed SMTP setup instructions and quick FAQs.
Oct 1, 2025
How Secure Is Your Email Communication Today?
Discover how email works, the main security threats, and actionable steps like DMARC, encryption, VPN, and MFA to protect your messages.
Oct 1, 2025
How can I send secure email using Outlook?
Learn step‑by‑step how to encrypt Outlook messages, use sensitivity labels, configure S/MIME, and protect your domain with DMARC, SPF, DKIM, and BIMI via…
Sep 30, 2025
What is an impersonation attack and how can you stop it?
Impersonation attacks are a form of social engineering where a malicious actor pretends to be a trusted person—often a senior executive or a known…
Sep 29, 2025
How Can You Safely Handle Malicious Email Attachments?
Look for unexpected file types, executable extensions (.exe, .bat), or mismatched file names.
Sep 29, 2025
How can secure email gateways protect my organization?
Secure Email Gateways (SEGs) act as a protective shield that scans every incoming email before it lands in your users’ inboxes, blocking spam, phishing…
Sep 29, 2025
What Were the Key Email Security Highlights in October 2021?
Cybersecurity Awareness Month, launched by the U.S. Department of Homeland Security, runs every October to promote best practices in digital safety.
Sep 29, 2025
What is Spam Email and How to Prevent It?
Spam email, also known as junk mail, is any unsolicited commercial message sent in bulk to many recipients.
Sep 29, 2025
Why Should MSPs Prioritize Email Security?
Companies around the globe rely on managed service providers (MSPs) to keep their IT environments running smoothly.
Sep 29, 2025
How can you spot fake emails and protect yourself from scams?
Phishing attacks are getting more sophisticated, but you can protect yourself by learning to spot the red flags in fake emails.
Sep 29, 2025
How will the SVB collapse boost BEC scams and what can you do?
Whenever a crisis strikes in today’s digital world—whether a natural disaster or a financial shock—people flock to the Internet for help, updates, and…
Sep 29, 2025
Business Email Compromise (BEC) attacks: 2025 guide
You receive an urgent email from your CEO requesting a wire transfer. It looks legit—right email address, familiar language, and insider details.
Sep 29, 2025
What is email impersonation and how can you prevent it in 2025?
Email impersonation isn’t just an IT problem. It’s a silent storm, quietly eroding your brand’s reputation, customer trust, and financial stability.
Sep 29, 2025
What is email filtering and how does it prevent spam?
Email filtering services keep your inbox safe and legitimate by finding and removing spam messages before you do.
Sep 29, 2025
What are the 3 types of email impersonation attacks?
The cost of Business Email Compromise (BEC) totaled more than $50 billion over a nine-year period ending July 2019, according to the FBI.
Sep 29, 2025
What is email spoofing and how can you prevent it?
Email spoofing is a deceptive practice cybercriminals use to disguise their identity by altering the sender information in emails.
Sep 29, 2025
Why do your emails go to spam and how can you fix it?
The spam folder: every email marketer’s worst nightmare. Why do your emails end up in the spam folder, and is there anything you can do about it?
Sep 29, 2025
What is TLS?
Learn how TLS protects your data with encryption, authentication, and integrity checks.
Jun 13, 2025
What is an email Alias?
Discover what an email alias is and how it organizes your inbox.
Jun 6, 2025
What does BCC mean in email?
Learn what BCC means in email and how it protects privacy.
Jun 5, 2025
What is POP3?
Learn how POP3 downloads emails for offline use and local storage.
Jun 5, 2025
What is IMAP?
Learn how IMAP syncs emails across devices with server-based access.
Jun 5, 2025
Fix '550 5.1.1' Bounce: Recipient Address Not Found
The 550 5.1.1 bounce means the recipient address failed lookup. Fix typos, stale contacts, and directory sync issues — and stop the NDRs.
Jun 4, 2025
Fix '550 5.4.1 Recipient Address Rejected: Access Denied'
Step-by-step fix for the 550 5.4.1 recipient address rejected error in Microsoft 365 and Exchange — directory settings, connectors, and DMARC causes.
Jun 3, 2025
What are 550 Errors?
Explore 550 errors, their many variants, and fixes to boost your email deliverability.
Jun 3, 2025
What is an A record?
Discover what A records are, how they function, and their role in web and email.
May 29, 2025
What is an IP Address?
Learn what IP addresses are, how they work, and why they matter for internet and email security.
May 29, 2025
What is an IP Reputation?
Learn about IP reputation, ensuring email deliverability with SPF, DKIM, DMARC authentication protocols.
May 26, 2025
What is a Domain Reputation?
Learn about domain reputation, ensuring email deliverability with SPF, DKIM, DMARC authentication protocols.
May 26, 2025
What is a CNAME record?
Learn about CNAME records, DNS aliases simplifying email and website management with authentication.
May 24, 2025
What is a TXT record?
Learn about TXT records, DNS entries enabling email authentication and security for domains.
May 23, 2025
What is Email Deliverability?
Learn about email deliverability, ensuring inbox placement with SPF, DKIM, DMARC, and best practices.
May 23, 2025
What is an Email Header?
Learn about email headers, metadata tracking email origins and authenticity, for enhanced security.
May 21, 2025
What are Spam Emails?
Learn about spam, unsolicited emails, and how SPF, DKIM, and DMARC prevent spoofing threats.
May 13, 2025
What is an MUA?
Discover MUAs, email clients for sending and managing emails with SMTP, IMAP, and security.
May 13, 2025
What is a PTR Record?
Learn about PTR Records, mapping IPs to domains for reverse DNS and email authentication.
May 13, 2025
What is ARC?
Learn about ARC, the email protocol preserving SPF/DKIM/DMARC through relays for secure delivery.
May 13, 2025
What is a RUA?
Learn about RUA in DMARC, the URI for receiving aggregate email reports. Discover how it helps monitor authentication and combat spoofing.
May 12, 2025
What is an MTA?
Learn about MTAs, the software that sends and routes emails. Discover how they work, their benefits, and tips for secure setup with SMTP and DMARC.
May 12, 2025
What is SMTP?
Discover SMTP, the protocol for sending emails. Learn how it works, its benefits, and tips for secure setup with SPF, DKIM, and DMARC.
May 12, 2025
What is DKIM?
Understand DKIM, the cryptographic tool that ensures email authenticity and integrity.
Apr 23, 2025
Email Security Threats and Statistics 2025
2025 email threats are rising! Learn about phishing, Microsoft’s DMARC rules, and how Palisade Workbench boosts security & compliance.
Apr 22, 2025
Why you need to enforce DMARC in 2025?
In 2024, Google and Yahoo cracked down on DMARC. Poor enforcement means email failures, phishing risks, and compliance fines.
Feb 17, 2025
Email Deployment in 2024: What It Means and How to Do It
Email Deployment Guide
May 2, 2024
New Deadline: 7 Days Left to get your Emails in line with Google
Google has announced new authentication requirements for email senders effective from October 2023.
Mar 26, 2024
Debunking: Email Deliverability is not Set and Forget
Email deliverability hinges on constantly evolving compliance, protocols, and security practices, necessitating frequent updates and monitoring to…
Mar 25, 2024
Just In - February 14th Update for Google’s Email Sender Requirements
Google Updates Email Guidelines: New sender rules start February 2024, with focus on unsubscribe options and spam limits.
Feb 15, 2024
How to Hit Your Lead's Inbox (Gmail & Yahoo 2024 Update)
Beginning in early 2024, Google and Yahoo are changing their requirements for sending emails.
Nov 21, 2023
How to improve your open rates by 39% with BIMI
Keeping up with the latest in email marketing is crucial, and that's exactly why you should keep and eye on trends like BIMI (Brand Indicators for Message…
Oct 20, 2023
Guide to Email Deliverability in 2024
Imagine investing significant time, effort, and resources, only to find your meticulously crafted emails ending up in the spam folders of your recipients.
Sep 19, 2023
How does DNS fix Email Deliverability?
Fix email deliverability at the DNS level: correct SPF, DKIM, DMARC, MX, and PTR records decide whether your mail reaches the inbox.
Aug 9, 2023
How to Understand DMARC Reports
Email delivery is crucial for businesses to communicate effectively with their customers, partners, and employees.
Aug 9, 2023
Why is My Company Logo Not Displaying in Gmail?
Logo not showing in Gmail? Check your BIMI record, SVG format, DMARC enforcement, and VMC — the fixes that get your brand displayed.
Aug 9, 2023
How Companies Get the Verified Blue Checkmark on Twitter
How companies get verified on Twitter/X: eligibility, the application process, and how verification protects your brand from impersonation.
Aug 9, 2023
A Step-by-Step Guide to Getting Verified on Facebook
Getting verified on Facebook can significantly boost your credibility and visibility.
Aug 9, 2023
Meta's Paid Verification for Creators
Paid verification, as the name suggests, involves a fee-based process where users can apply for verification on Instagram.
Aug 9, 2023
Office 365 Quarantine: Protecting Your Organization from Threats
Office 365 quarantine explained: how Microsoft filters suspicious mail, how admins review and release messages, and how to tune your policies.
Aug 9, 2023
How do I get a Blue Gmail Checkmark?
Get the blue Gmail checkmark: set up DMARC enforcement, a BIMI record, and a Verified Mark Certificate so Gmail shows your brand as verified.
Aug 9, 2023
Comprehensive Guide to DNS CNAME Records
DNS CNAME (Canonical Name) Records play a crucial role in the infrastructure of the Domain Name System (DNS).
Aug 9, 2023
How to Trademark a Logo and Protect Your Brand
A trademarked logo is a powerful tool that can set your business apart from the competition.
Aug 9, 2023
DNS TXT Record Lookup: dig, nslookup & Online Tools
Look up DNS TXT records in seconds with dig, nslookup, or our free online checker — plus how to read SPF, DKIM, and DMARC values in the results.
Aug 9, 2023
Top 10 Reasons Why DKIM Fails
Top 10 reasons DKIM fails: wrong selectors, DNS errors, key length, forwarding — and how to fix each so your email passes authentication.
Aug 9, 2023
How to Create an SPF Record (Step-by-Step + Examples)
Build a valid SPF record in minutes: syntax, include limits, real examples for Google Workspace and Microsoft 365, and a checker to verify it.
Aug 9, 2023
How Does a Blue Gmail Checkmark Affect Deliverability?
Discover the impact of the blue Gmail checkmark on email deliverability.
Aug 9, 2023
How to Stop Email Spoofing and Protect Your Brand
Stop email spoofing: implement SPF, DKIM, and DMARC enforcement to block attackers from sending as your domain and protect your brand.
Aug 9, 2023
How much does it Cost to Trademark a logo?
How much a logo trademark costs: USPTO filing fees, attorney costs, and timelines — plus why a registered logo matters for BIMI email branding.
Aug 9, 2023
How to Prevent ARP Spoofing Attacks
Learn how to detect and prevent ARP Spoofing with practical, effective strategies.
Aug 9, 2023
Introduction to SPF Records
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…
Aug 9, 2023
What is a DNS MX Record: A Comprehensive Guide
DNS MX records explained: how they route your email, how to set priorities, and how to check and fix MX configuration problems.
Aug 9, 2023
Setting Up a DKIM Record for Email Security
Set up a DKIM record step by step: generate keys, publish the DNS TXT record, and verify signing to stop spoofing and improve deliverability.
Aug 9, 2023
What is a MITM Attack: Safeguarding Your Company's Network Security
Man-in-the-middle (MITM) attacks intercept traffic between you and legitimate services. Learn the warning signs and defenses that stop them.
Aug 9, 2023
What is BIMI and why does it matter?
BIMI (Brand Indicators for Message Identification) displays your logo in the inbox. Learn how it works, its requirements, and why it matters.
Aug 9, 2023
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.
Aug 9, 2023
How to Set Up DKIM in Office 365 (Microsoft 365)
Enable DKIM signing in Microsoft 365 step by step: the two CNAME records, Defender portal settings, and how to verify your selector is live.
Aug 9, 2023
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.
Aug 9, 2023
How to Detect and Verify Fake Email Senders?
Spot fake email senders: check headers, verify SPF, DKIM, and DMARC results, and use sender verification tools to detect spoofed messages.
Aug 9, 2023
How to Create a BIMI Record: A Step-by-Step Guide
BIMI is an emerging standard that allows you to display your brand logo or image next to your email messages in supporting email clients.
Aug 9, 2023
Comprehensive Guide to Data Breach Prevention Best Practices
Data breach prevention best practices: access controls, employee training, email authentication, and monitoring to keep attackers out.
Aug 9, 2023
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.
Aug 9, 2023
The Ultimate BIMI Generator Guide
BIMI generator guide: create a valid BIMI record, convert your logo to SVG Tiny PS, and get your brand displayed in Gmail and Yahoo inboxes.
Aug 9, 2023
Google just announced it’s Gmail verified checkmark
Google's Gmail verified checkmark shows a blue tick next to authenticated brands. Learn how BIMI and a VMC get your logo verified.
Aug 9, 2023
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.
Aug 9, 2023
DNS TXT Records Explained: Format, Uses & Examples
What a TXT record is, the exact syntax, and how TXT records power SPF, DKIM, DMARC, and domain verification — with copy-paste examples.
Aug 9, 2023
DMARC Policy Not Enabled: How to Fix It
Fix the 'DMARC policy not enabled' warning: move from p=none to quarantine or reject safely, with monitoring to avoid losing legitimate mail.
Aug 9, 2023
The ABCs of DNS PTR Records
DNS PTR records explained: how reverse DNS works, why mail servers check it, and how to set up PTR records to improve email credibility.
Aug 9, 2023
Protect Yourself from Malicious Email Attachments | Tips & Prevention
Malicious email attachments deliver most malware. Learn the file types to watch, how to verify senders, and defenses that stop infected files.
Aug 9, 2023
Comparing DKIM and SPF Email Standards: Are Both Necessary?
DKIM vs SPF: how each email authentication standard works, where they differ, and why you need both — plus DMARC — to stop spoofing.
Aug 9, 2023