--- title: MDaemon Simple Secure Email | Anti-Spoofing description: Anti-Spoofing | Email server and email security insights from MDaemon Technologies, an expert in email server and email gateway software, will help you better manage your company's email system. --- [![MDaemon Technologies](https://blog.mdaemon.com/hs-fs/hubfs/MDaemon-Technologies_logo_large.png?width=564&height=110&name=MDaemon-Technologies_logo_large.png "MDaemon Technologies")](https://mdaemon.com/) - [Blog Home](https://blog.mdaemon.com) # MDaemon Technologies Blog [![](https://blog.mdaemon.com/hubfs/dmarc-blog-featured_5.jpg)](https://blog.mdaemon.com/how-to-move-your-dmarc-policy-from-pnone-to-preject-without-breaking-mail) ## [How to Move Your DMARC Policy from p=none to p=reject Without Breaking Mail](https://blog.mdaemon.com/how-to-move-your-dmarc-policy-from-pnone-to-preject-without-breaking-mail) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Email How To](https://blog.mdaemon.com/topic/email-how-to), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Email Security Best Practices](https://blog.mdaemon.com/topic/email-security-best-practices), [Email Best Practices](https://blog.mdaemon.com/topic/email-best-practices), [DMARC](https://blog.mdaemon.com/topic/dmarc) [0 Comments](https://blog.mdaemon.com/how-to-move-your-dmarc-policy-from-pnone-to-preject-without-breaking-mail#comments-listing) *This is Part 2 of a two-part series on email authentication. Part 1: [Why Messages That Fail SPF, DKIM, or DMARC Still Reach Inboxes — and How to Fix It in MDaemon](https://blog.mdaemon.com/why-messages-that-fail-spf-dkim-or-dmarc-still-reach-inboxes-and-how-to-fix-it-in-mdaemon).* [Read More](https://blog.mdaemon.com/how-to-move-your-dmarc-policy-from-pnone-to-preject-without-breaking-mail) [![](https://blog.mdaemon.com/hubfs/SecurityGateway-Webinar-TN.jpg)](https://blog.mdaemon.com/protect-microsoft-365-microsoft-exchange-from-spam-other-email-threats.-watch-our-securitygateway-technical-training-webinar-to-learn-more) ## [New SecurityGateway™ Technical Training webinar available: Spam filter & phishing  protection for Microsoft Exchange Server & Microsoft 365](https://blog.mdaemon.com/protect-microsoft-365-microsoft-exchange-from-spam-other-email-threats.-watch-our-securitygateway-technical-training-webinar-to-learn-more) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Data Leak Prevention](https://blog.mdaemon.com/topic/data-leak-prevention), [Email Security](https://blog.mdaemon.com/topic/email-security), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Email Archiving](https://blog.mdaemon.com/topic/email-archiving), [Compliance](https://blog.mdaemon.com/topic/compliance), [SecurityGateway](https://blog.mdaemon.com/topic/securitygateway) [2 Comments](https://blog.mdaemon.com/protect-microsoft-365-microsoft-exchange-from-spam-other-email-threats.-watch-our-securitygateway-technical-training-webinar-to-learn-more#comments-listing) Many businesses are finding that the email security and spam filtering features in Microsoft 365, Barracuda and other secure email gateway platforms just don't seem to get the job done in protecting businesses from spam, phishing, malware and data leaks. SecurityGateway™ for Email is a user-friendly alternative that includes anti-spam, anti-spoofing, and anti-abuse features, along  with archiving and compliance, in an easy-to-use interface that includes color-coded email delivery charts & graphs to make administration & troubleshooting easy.  [Read More](https://blog.mdaemon.com/protect-microsoft-365-microsoft-exchange-from-spam-other-email-threats.-watch-our-securitygateway-technical-training-webinar-to-learn-more) [![](https://blog.mdaemon.com/hubfs/Receiving-Strange-Emails-from-Yourself-1.png)](https://blog.mdaemon.com/receiving-strange-emails-from-yourself-heres-what-you-need-to-know) ## [Receiving Strange Emails from Yourself? Here’s What You Need to Know](https://blog.mdaemon.com/receiving-strange-emails-from-yourself-heres-what-you-need-to-know) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Email Security](https://blog.mdaemon.com/topic/email-security), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Email Spoofing](https://blog.mdaemon.com/topic/email-spoofing), [Email Security Best Practices](https://blog.mdaemon.com/topic/email-security-best-practices), [Email Best Practices](https://blog.mdaemon.com/topic/email-best-practices) [0 Comments](https://blog.mdaemon.com/receiving-strange-emails-from-yourself-heres-what-you-need-to-know#comments-listing) It’s alarming to discover that someone is sending emails that appear to come from your email address—especially if you didn’t send them. This situation can make you wonder if your email has been hacked. However, not all suspicious activity means you’ve been compromised. In many cases, your email address may simply be **spoofed**, not hacked. [Read More](https://blog.mdaemon.com/receiving-strange-emails-from-yourself-heres-what-you-need-to-know) [![](https://blog.mdaemon.com/hubfs/Email-Envelopes-Tablet.png)](https://blog.mdaemon.com/gmail-enforcing-stricter-authentication-policies) ## [Deploying DMARC to Adhere to Google's Strengthened Email Authentication Requirements](https://blog.mdaemon.com/gmail-enforcing-stricter-authentication-policies) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Email Authentication](https://blog.mdaemon.com/topic/email-authentication), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing) [0 Comments](https://blog.mdaemon.com/gmail-enforcing-stricter-authentication-policies#comments-listing) **2026 Update:** Enforcement has tightened considerably since this post first went written. Starting in November 2025, Google began ramping up enforcement on non-compliant bulk mail, and failing messages can now see temporary or permanent SMTP rejections rather than just being routed to spam. Microsoft has also joined Google and Yahoo, enforcing its own SPF, DKIM, and DMARC requirements for Outlook.com, Hotmail.com, and Live.com senders since May 5, 2025. And the DMARC standard itself has changed: in May 2026, the IETF officially published DMARCbis, an update to the DMARC specification that adds a few new record tags and retires a few old ones. We've updated the guidance below to reflect all of this. [Read More](https://blog.mdaemon.com/gmail-enforcing-stricter-authentication-policies) [![](https://blog.mdaemon.com/hubfs/DMARC-Best-Practices-1.png)](https://blog.mdaemon.com/dmarc-best-practices-securing-your-email-communications) ## [DMARC Best Practices: Securing Your Email Communications](https://blog.mdaemon.com/dmarc-best-practices-securing-your-email-communications) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Email How To](https://blog.mdaemon.com/topic/email-how-to), [Email Security](https://blog.mdaemon.com/topic/email-security), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Email Spoofing](https://blog.mdaemon.com/topic/email-spoofing), [Email Security Best Practices](https://blog.mdaemon.com/topic/email-security-best-practices) [0 Comments](https://blog.mdaemon.com/dmarc-best-practices-securing-your-email-communications#comments-listing) Discover the best practices for securing your email communications with DMARC and its importance in preventing email fraud and phishing attacks. [Read More](https://blog.mdaemon.com/dmarc-best-practices-securing-your-email-communications) [![](https://blog.mdaemon.com/hubfs/How_MSPs_Can_Have_Greater_Control_over_Secure_Email_Gateways.jpg)](https://blog.mdaemon.com/how-msps-can-have-greater-control-over-secure-email-gateways) ## [How MSPs Can Have Greater Control Over Secure Email Gateways](https://blog.mdaemon.com/how-msps-can-have-greater-control-over-secure-email-gateways) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Cloud](https://blog.mdaemon.com/topic/cloud), [Data Leak Prevention](https://blog.mdaemon.com/topic/data-leak-prevention), [Email Security](https://blog.mdaemon.com/topic/email-security), [Cybersecurity](https://blog.mdaemon.com/topic/cybersecurity), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Stop Spam Email](https://blog.mdaemon.com/topic/stop-spam-email), [Anti-Virus](https://blog.mdaemon.com/topic/anti-virus), [Email Server](https://blog.mdaemon.com/topic/email-server), [External Email Threats](https://blog.mdaemon.com/topic/external-email-threats), [internal email threat](https://blog.mdaemon.com/topic/internal-email-threat), [msp](https://blog.mdaemon.com/topic/msp) [0 Comments](https://blog.mdaemon.com/how-msps-can-have-greater-control-over-secure-email-gateways#comments-listing) Email is still the number one way attackers get into an organization. In 2025, the FBI’s Internet Crime Complaint Center (IC3) logged more than [$20.8 billion in reported losses](https://www.ic3.gov/AnnualReport/Reports/2025_IC3Report.pdf), a 26% jump over the prior year, and business email compromise (BEC) alone accounted for roughly $3 billion of that total. For managed service providers (MSPs), those figures are more than an industry headline. When a client gets hit, the MSP is the one who has to explain what happened, clean up the damage, and answer the hard question of why the defenses did not hold. [Read More](https://blog.mdaemon.com/how-msps-can-have-greater-control-over-secure-email-gateways) [![](https://blog.mdaemon.com/hubfs/security-gbb4525740_1280.jpg)](https://blog.mdaemon.com/how-to-select-the-right-email-security-solution-for-your-msp-s-customers) ## [How to Select the Right Email Security Solution for Your MSP's Customers](https://blog.mdaemon.com/how-to-select-the-right-email-security-solution-for-your-msp-s-customers) By [Kevin Beatty](https://blog.mdaemon.com/author/kevin-beatty) posted in [Email How To](https://blog.mdaemon.com/topic/email-how-to), [Email Security](https://blog.mdaemon.com/topic/email-security), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Quarantine](https://blog.mdaemon.com/topic/quarantine), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Stop Spam Email](https://blog.mdaemon.com/topic/stop-spam-email), [Anti-Virus](https://blog.mdaemon.com/topic/anti-virus), [msp](https://blog.mdaemon.com/topic/msp) [0 Comments](https://blog.mdaemon.com/how-to-select-the-right-email-security-solution-for-your-msp-s-customers#comments-listing) Threat actors are continuing their assault on businesses, individuals, and Managed Service Providers (MSPs) this year, and email is still the top vector. As your clients turn to you for secure services, you need to make sure you have the right email security solution in place to protect your customers. [Read More](https://blog.mdaemon.com/how-to-select-the-right-email-security-solution-for-your-msp-s-customers) [![](https://blog.mdaemon.com/hubfs/Why-end-user-education-not-enough-2026.jpg)](https://blog.mdaemon.com/why-you-cant-rely-on-users-to-keep-email-secure) ## [Why You Can't Rely on Users to Keep Email Secure (2026 Update)](https://blog.mdaemon.com/why-you-cant-rely-on-users-to-keep-email-secure) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Email Authentication](https://blog.mdaemon.com/topic/email-authentication), [Email Security](https://blog.mdaemon.com/topic/email-security), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Stop Spam Email](https://blog.mdaemon.com/topic/stop-spam-email), [Anti-Virus](https://blog.mdaemon.com/topic/anti-virus), [insider threats](https://blog.mdaemon.com/topic/insider-threats) [0 Comments](https://blog.mdaemon.com/why-you-cant-rely-on-users-to-keep-email-secure#comments-listing) For hackers, it's a numbers game. An estimated 3.4 billion phishing emails are sent every day, but all they need is for one of them to find a willing victim and do damage to your network. And in 2026, the odds have shifted further in the attacker's favor. Generative AI now writes the majority of phishing emails, producing fluent, personalized, typo-free messages that are far harder to spot than the clumsy scams of a few years ago. Research shows AI-crafted phishing lures achieve dramatically higher click rates than traditional ones, while costing attackers almost nothing to produce at scale. Needless to say, leaving email security up to end users is probably not a good idea. [Read More](https://blog.mdaemon.com/why-you-cant-rely-on-users-to-keep-email-secure) [![](https://blog.mdaemon.com/hubfs/Stock%20images/cyber%20threat.jpg)](https://blog.mdaemon.com/beyond-hackers-identify-and-mitigate-insider-threats-to-your-data) ## [Beyond Hackers: Identify and Mitigate Insider Threats to Your Data](https://blog.mdaemon.com/beyond-hackers-identify-and-mitigate-insider-threats-to-your-data) By [Brad Wyro](https://blog.mdaemon.com/author/brad-wyro) posted in [Data Leak Prevention](https://blog.mdaemon.com/topic/data-leak-prevention), [Email Security](https://blog.mdaemon.com/topic/email-security), [Cybersecurity](https://blog.mdaemon.com/topic/cybersecurity), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Spear Phishing](https://blog.mdaemon.com/topic/spear-phishing), [Email Spoofing](https://blog.mdaemon.com/topic/email-spoofing), [Phishing](https://blog.mdaemon.com/topic/phishing), [insider threats](https://blog.mdaemon.com/topic/insider-threats) [0 Comments](https://blog.mdaemon.com/beyond-hackers-identify-and-mitigate-insider-threats-to-your-data#comments-listing) Jean Patrice Delia was an engineer at GE when he decided to steal company data and use trade secrets, pricing information, marketing data, and other documents and funnel them to his business partner to compete against GE. After an FBI investigation, Delia was arrested and [sentenced to two years in prison and ordered to pay $1.4 million in restitution](https://www.justice.gov/usao-ndny/pr/former-ge-engineer-sentenced-24-months-conspiring-steal-trade-secrets). His business partner, Miguel Sernas, spent nearly a year in jail and was also ordered to pay $1.4 million.  [Read More](https://blog.mdaemon.com/beyond-hackers-identify-and-mitigate-insider-threats-to-your-data) [![](https://blog.mdaemon.com/hubfs/SG%20Honeycomb.png)](https://blog.mdaemon.com/users-love-securitygateway-for-email-servers-in-g2s-winter-reports) ## [Users Love SecurityGateway™ for Email Servers in G2's Winter Reports](https://blog.mdaemon.com/users-love-securitygateway-for-email-servers-in-g2s-winter-reports) By [Kevin Beatty](https://blog.mdaemon.com/author/kevin-beatty) posted in [Data Leak Prevention](https://blog.mdaemon.com/topic/data-leak-prevention), [Email Security](https://blog.mdaemon.com/topic/email-security), [Cybersecurity](https://blog.mdaemon.com/topic/cybersecurity), [Anti-Spoofing](https://blog.mdaemon.com/topic/anti-spoofing), [Security Gateway for Email](https://blog.mdaemon.com/topic/security-gateway-for-email), [Anti-Virus](https://blog.mdaemon.com/topic/anti-virus) [0 Comments](https://blog.mdaemon.com/users-love-securitygateway-for-email-servers-in-g2s-winter-reports#comments-listing) G2 just released their Winter 2022 badges, and SecurityGateway™ for Email Servers continues to rank at the top of the Secure Email Gateway Software category. 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[Email Archiving (8)](https://blog.mdaemon.com/tag/email-archiving) - [Email Management (8)](https://blog.mdaemon.com/tag/email-management) - [Email Privacy (8)](https://blog.mdaemon.com/tag/email-privacy) - [Email Spoofing (8)](https://blog.mdaemon.com/tag/email-spoofing) - [Business Email Compromise (7)](https://blog.mdaemon.com/tag/business-email-compromise) - [Anti-Virus (6)](https://blog.mdaemon.com/tag/anti-virus) - [Email Software (6)](https://blog.mdaemon.com/tag/email-software) - [Tutorial (6)](https://blog.mdaemon.com/tag/tutorial) - [Update (6)](https://blog.mdaemon.com/tag/update) - [Collaboration (5)](https://blog.mdaemon.com/tag/collaboration) - [Email Authentication (5)](https://blog.mdaemon.com/tag/email-authentication) - [Compliance (4)](https://blog.mdaemon.com/tag/compliance) - [Email Remote Administration (4)](https://blog.mdaemon.com/tag/email-remote-administration) - [MailStore Archive Server (4)](https://blog.mdaemon.com/tag/mailstore-archive-server) - [Microsoft 365 Exchange Alternative (4)](https://blog.mdaemon.com/tag/microsoft-365-exchange-alternative) - [Passwords (4)](https://blog.mdaemon.com/tag/passwords) - [Software update (4)](https://blog.mdaemon.com/tag/software-update) - [Archive (3)](https://blog.mdaemon.com/tag/archive) - [Attachments (2)](https://blog.mdaemon.com/tag/attachments) - [Business Email (2)](https://blog.mdaemon.com/tag/business-email) - [Cloud (2)](https://blog.mdaemon.com/tag/cloud) - [DMARC (2)](https://blog.mdaemon.com/tag/dmarc) - [Industry Insight (2)](https://blog.mdaemon.com/tag/industry-insight) - [MDaemon (2)](https://blog.mdaemon.com/tag/mdaemon) - [insider threats (2)](https://blog.mdaemon.com/tag/insider-threats) - [msp (2)](https://blog.mdaemon.com/tag/msp) - [Anti-Relay (1)](https://blog.mdaemon.com/tag/anti-relay) - [BEC (1)](https://blog.mdaemon.com/tag/bec) - [Backscatter (1)](https://blog.mdaemon.com/tag/backscatter) - [Bayesian Learning (1)](https://blog.mdaemon.com/tag/bayesian-learning) - [Content Filter (1)](https://blog.mdaemon.com/tag/content-filter) - [DNS-BL (1)](https://blog.mdaemon.com/tag/dns-bl) - [Disaster Recovery (1)](https://blog.mdaemon.com/tag/disaster-recovery) - [Email Collaboration (1)](https://blog.mdaemon.com/tag/email-collaboration) - [Email Software Reviews (1)](https://blog.mdaemon.com/tag/email-software-reviews) - [Encrypt (1)](https://blog.mdaemon.com/tag/encrypt) - [External Email Threats (1)](https://blog.mdaemon.com/tag/external-email-threats) - [Gateway (1)](https://blog.mdaemon.com/tag/gateway) - [Inbox (1)](https://blog.mdaemon.com/tag/inbox) - [Inbox Zero (1)](https://blog.mdaemon.com/tag/inbox-zero) - [Macros (1)](https://blog.mdaemon.com/tag/macros) - [Monitoring (1)](https://blog.mdaemon.com/tag/monitoring) - [Quarantine (1)](https://blog.mdaemon.com/tag/quarantine) - [RelayFax (1)](https://blog.mdaemon.com/tag/relayfax) - [Software (1)](https://blog.mdaemon.com/tag/software) - [Training (1)](https://blog.mdaemon.com/tag/training) - [Troubleshooting (1)](https://blog.mdaemon.com/tag/troubleshooting) - [Upgrade (1)](https://blog.mdaemon.com/tag/upgrade) - [Web Conferencing (1)](https://blog.mdaemon.com/tag/web-conferencing) - [Windows Server (1)](https://blog.mdaemon.com/tag/windows-server) - [internal email threat (1)](https://blog.mdaemon.com/tag/internal-email-threat) - [ssl (1)](https://blog.mdaemon.com/tag/ssl) - [tax scams (1)](https://blog.mdaemon.com/tag/tax-scams) See all #### About MDaemon Technologies MDaemon Technologies is a pioneer in developing email and email security software helping to protect customers from evolving cyber-security threats. Its products and services are trusted by thousands of organizations in over 140 countries. For more than two decades, the company’s products have been developed with the ongoing input of IT professionals who demand reliable, affordable software that requires minimal effort to manage. The software can be deployed in virtual, hosted cloud, on-premises, or hybrid network environments. The company sells its software and services directly and through a network of global channel partners. For more information, visit [www.mdaemon.com](https://www.altn.com/). Copyright © 1996-2026 MDaemon Technologies.  View [privacy policy](https://mdaemon.com/policies/privacy-policy).   ###### Contact Us +1.817-601-3222 [sales@help.mdaemon.com](mailto:sales@help.mdaemon.com) 6340 Lake Worth Blvd. Fort Worth, TX 76135