---
title: "Effective Spam Filtering Protects Your Employees | DuoCircle"
description: "Spam is more than just an annoyance, and effective spam filtering is a critical part of any IT security plan."
image: "https://www.duocircle.com/images/og-default.png"
canonical: "https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/"
---

Quick Answer

Effective spam filtering removes inbound junk before it reaches inboxes, which matters because over 90% of security breaches start with email and roughly 91% of corporate attacks begin with spam or other email-borne threats. DuoCircle's cloud-based Spam Filtering Gateway removes 99% of inbound spam with a false positive rate around 0.0001%, blocks viruses and malware, supports DKIM and DMARC validation, and lets users tune their own permitted and blocked sender lists. Paired with the Advanced Threat Defense suite, it adds protection against domain spoofing, malicious attachments, and zero-day attacks, plus a Smart Adaptive Quarantine that pushes the sorting burden back to senders, real-time activity logs, a 30-day MX backup queue, and 24/7 chat, email, and phone support.

Share 

[ ](https://www.linkedin.com/sharing/share-offsite/?url=undefined%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F "Share on LinkedIn") [ ](https://twitter.com/intent/tweet?text=Effective%20Spam%20Filtering%20Protects%20Your%20Employees&url=undefined%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F "Share on X/Twitter") [ ](https://www.facebook.com/sharer/sharer.php?u=undefined%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F "Share on Facebook") [ ](https://reddit.com/submit?url=undefined%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F&title=Effective%20Spam%20Filtering%20Protects%20Your%20Employees "Share on Reddit") [ ](mailto:?subject=Effective%20Spam%20Filtering%20Protects%20Your%20Employees&body=Check out this article: undefined%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F "Share via Email") 

![Spam](https://media.mailhop.org/duocircle/images/2018/08/SMTP-email-3641.jpg) 

**Spam is more than just an annoyance**, and effective spam filtering is a critical part of any IT security plan. Each day, corporate email servers are inundated with a vast amount of spam. To combat this rising tide, organizations need sophisticated spam filtering. When proper **spam filtering** is in place, employee inboxes are kept free of unwanted messages, and unwanted traffic stays off the network.

But spam represents more than the threat of unwanted traffic. _Over 90% of security breaches begin with some form of email attack, and spam, by definition, is email_. The first line of defense against email borne threats therefore consists of superior spam filtering. [DuoCircle’s Spam Filtering Gateway](/email/spam-filtering/) is a cloud-based solution that eliminates spam before it can reach your network.

### DuoCircle’s Spam Filtering Gateway

As a part of the [Advanced Threat Defense Suite from DuoCircle](/advanced-threat-defense/), the Spam Filtering Gateway provides organizations with a _superior cloud-based spam filtering solution_.With _best in class data_ centers _located_ world-wide, you can take advantage of cloud based email or use your own email server in conjunction with our **commercial grade spam filtering engine**.

DuoCircle’s Spam Filtering Gateway solution provides:

- The **removal of 99%** of all spam from your inbound email along with a 0.0001% false positive rating.
- A reduction of unwanted mail through user-configurable message content filtering.
- The security of **100% protection** against viruses and malware with **100% uptime**.
- Employee ability to set policies to filter permitted and blocked senders.
- Support for email validation, including DKIM and DMARC.

[![protection](https://media.mailhop.org/duocircle/images/2018/08/SMTP-server-mail-6352.jpg)](https://media.mailhop.org/duocircle/images/2018/08/SMTP-server-mail-6352.jpg)

In order to provide the superior level of protection DuoCircle does, sophisticated and **multi-layered detection engines** are used, alongside intelligence that identifies and mitigates against the risks posed by spam. Other known and emerging threats are identified and eliminated before they can propagate within your network.

### Advanced Threat Defense: Protection Form Spam is Only The Beginning

Spam and email-based threats are the source of 91% of successful corporate attacks. In light of this uncomfortable fact, it makes sense to combine your spam filtering solution with threat detection systems to defend against email-borne attacks. But _Advanced Threat Defense protects your organization from more than just spam._

DuoCircle Advanced Threat Defense pulls together all the tools your organization needs in a single integrated solution to protect and defend your employees from spam, malware, ransomware, phishing, and malicious attachments.

> Using an intelligent classification engine, we detect these threats in real-time and defend against them with the highest possible level of accuracy.

Threats are stopped in their tracks before they can wreak havoc on your network. Advanced Threat Defense from DuoCircle provides:

- Protection from malware and zero-day attacks, with 100% availability.
- Spam protection that eliminates 99% of all incoming spam with a false positive rate of less than one in ten thousand.
- Unlimited users and unlimited inbound message volume.
- Protection against domain name spoofing.
- Blocking of malicious attachments.
- Real-time activity logs, with access to the email queue and click reporting.
- **Smart Adaptive Quarantine**, which puts the burden of sorting spam messages on the sender rather than the recipient.
- **A thirty-day backup queue**, 30 days of MX backup service included.
- Chat, email and phone support is available 24/7

![Brad Slavin](https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg) 

Brad Slavin 

General Manager

General Manager at DuoCircle. Product strategy and commercial lead across the email security portfolio.

## Secure your email infrastructure

Protect, authenticate, and deliver. Contact our team to find the right solution.

[Contact Sales](/contact/) [Explore Products](/products/) 

Share this article

[ ](https://www.linkedin.com/sharing/share-offsite/?url=https%3A%2F%2Fwww.duocircle.com%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F) [ ](https://twitter.com/intent/tweet?text=Effective%20Spam%20Filtering%20Protects%20Your%20Employees&url=https%3A%2F%2Fwww.duocircle.com%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F) [ ](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.duocircle.com%2Fblog%2Fspam-filtering%2Feffective-spam-filtering-protects-your-employees%2F) Copy 

Related Articles

- [ ![Secure Email Gateway](https://media.mailhop.org/duocircle/images/2021/03/spf-record-9932.jpg)  A Guide On Email Gateway: What It Is And The Importance Of A Secure Email Gateway Spam Filtering ](/blog/spam-filtering/a-guide-on-email-gateway-what-it-is-and-the-importance-of-a-secure-email-gateway/)
- [ ![Anti-Spam Filters](https://media.mailhop.org/duocircle/images/2020/06/email-sending-services-7776.jpg)  Anti-Spam Filters and How They Work Spam Filtering ](/blog/spam-filtering/anti-spam-filters-and-how-they-work/)
- [  CERT Advisory Symantec and Norton Critical Vulnerability Spam Filtering ](/blog/spam-filtering/cert-advisory-symantec-norton-critical-vulnerability/)
- [ ![Cloud-Based Spam Filtering Protects](https://media.mailhop.org/duocircle/images/2018/09/spf-permerror-7776.jpg)  Cloud-Based Spam Filtering Protects Your Company Spam Filtering ](/blog/spam-filtering/cloud-based-spam-filtering-protects-your-company/)

## Related Articles

[  Spam Filtering 5m  A Guide On Email Gateway: What It Is And The Importance Of A Secure Email Gateway  Mar 4, 2021 ](/blog/spam-filtering/a-guide-on-email-gateway-what-it-is-and-the-importance-of-a-secure-email-gateway/)[  Spam Filtering 5m  Anti-Spam Filters and How They Work  Jun 19, 2020 ](/blog/spam-filtering/anti-spam-filters-and-how-they-work/)[  Spam Filtering 1m  CERT Advisory Symantec and Norton Critical Vulnerability  Jul 6, 2016 ](/blog/spam-filtering/cert-advisory-symantec-norton-critical-vulnerability/)[  Spam Filtering 3m  Cloud-Based Spam Filtering Protects Your Company  Sep 10, 2018 ](/blog/spam-filtering/cloud-based-spam-filtering-protects-your-company/)

```json
{"@context":"https://schema.org","@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}],"sameAs":["https://www.linkedin.com/company/duocircle","https://x.com/duocirclellc","https://www.facebook.com/duocirclellc","https://www.g2.com/products/phish-protection-by-duocircle/reviews","https://github.com/duocircle","https://www.crunchbase.com/organization/duocircle-llc"],"contactPoint":{"@type":"ContactPoint","contactType":"customer support","url":"https://support.duocircle.com"},"knowsAbout":["Email Security","Email Authentication","SPF","DKIM","DMARC","Phishing Protection","Spam Filtering","SMTP Relay","Email Deliverability","Email Forwarding"]}
```

```json
{"@context":"https://schema.org","@type":"WebSite","name":"DuoCircle LLC","url":"https://www.duocircle.com","description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","publisher":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]}}
```

```json
[{"@context":"https://schema.org","@type":"BlogPosting","headline":"Effective Spam Filtering Protects Your Employees","description":"Spam is more than just an annoyance, and effective spam filtering is a critical part of any IT security plan.","url":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/","datePublished":"2018-08-31T18:30:55.000Z","dateModified":"2025-05-27T12:24:57.000Z","dateCreated":"2018-08-31T18:30:55.000Z","author":{"@type":"Person","@id":"https://www.duocircle.com/authors/brad-slavin/#person","name":"Brad Slavin","url":"https://www.duocircle.com/authors/brad-slavin/","jobTitle":"General Manager","description":"Brad Slavin runs DuoCircle, the company behind DMARC Report, AutoSPF, Phish Protection, and Mailhop. His focus is product strategy, customer relationships, and the commercial and compliance side of email authentication (DPAs, SLAs, enterprise procurement).","image":"https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg","knowsAbout":["Email Security Strategy","SaaS Product Management","Enterprise Compliance","Customer Success","Email Deliverability Business"],"worksFor":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com"},"sameAs":["https://www.linkedin.com/in/bradslavin"]},"publisher":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]},"mainEntityOfPage":{"@type":"WebPage","@id":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/"},"articleSection":"spam-filtering","keywords":"","wordCount":522,"image":{"@type":"ImageObject","url":"https://media.mailhop.org/duocircle/images/2018/08/SMTP-email-3641.jpg","caption":"Spam","width":900,"height":600},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".answer-block","h1"]}},{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Blog","item":"https://www.duocircle.com/blog/"},{"@type":"ListItem","position":2,"name":"Spam Filtering"},{"@type":"ListItem","position":3,"name":"Effective Spam Filtering Protects Your Employees","item":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/"}]}]
```

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.duocircle.com/"},{"@type":"ListItem","position":2,"name":"Blog","item":"https://www.duocircle.com/blog/"},{"@type":"ListItem","position":3,"name":"Spam Filtering","item":"https://www.duocircle.comundefined"},{"@type":"ListItem","position":4,"name":"Effective Spam Filtering Protects Your Employees","item":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/"}]}
```

```json
{"@context":"https://schema.org","@type":"BlogPosting","headline":"Effective Spam Filtering Protects Your Employees","description":"Spam is more than just an annoyance, and effective spam filtering is a critical part of any IT security plan.","url":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/","datePublished":"2018-08-31T18:30:55.000Z","dateModified":"2025-05-27T12:24:57.000Z","dateCreated":"2018-08-31T18:30:55.000Z","author":{"@type":"Person","@id":"https://www.duocircle.com/authors/brad-slavin/#person","name":"Brad Slavin","url":"https://www.duocircle.com/authors/brad-slavin/","jobTitle":"General Manager","description":"Brad Slavin runs DuoCircle, the company behind DMARC Report, AutoSPF, Phish Protection, and Mailhop. His focus is product strategy, customer relationships, and the commercial and compliance side of email authentication (DPAs, SLAs, enterprise procurement).","image":"https://media.mailhop.org/dmarcreport/images/team/brad-slavin.jpg","knowsAbout":["Email Security Strategy","SaaS Product Management","Enterprise Compliance","Customer Success","Email Deliverability Business"],"worksFor":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com"},"sameAs":["https://www.linkedin.com/in/bradslavin"]},"publisher":{"@type":"Organization","name":"DuoCircle LLC","url":"https://www.duocircle.com","logo":{"@type":"ImageObject","url":"https://www.duocircle.com/images/duocircle-logo.png"},"description":"DuoCircle is a portfolio of specialized email products covering protection, authentication, delivery, and routing. We deliver about 90% of category-leader capability at roughly half the price, backed by experts who own the outcome. Trusted by 50,000+ organizations since 2014.","subOrganization":[{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138898167","name":"DMARC Report","url":"https://dmarcreport.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897474","name":"AutoSPF","url":"https://autospf.com"},{"@type":"Organization","@id":"https://www.wikidata.org/wiki/Q138897912","name":"Phish Protection","url":"https://www.phishprotection.com"}]},"mainEntityOfPage":{"@type":"WebPage","@id":"https://www.duocircle.com/blog/spam-filtering/effective-spam-filtering-protects-your-employees/"},"articleSection":"spam-filtering","keywords":"","wordCount":522,"image":{"@type":"ImageObject","url":"https://media.mailhop.org/duocircle/images/2018/08/SMTP-email-3641.jpg","caption":"Spam","width":900,"height":600},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".answer-block","h1"]}}
```
