--- title: "Geographically Diverse Spam Filtering Zones | DuoCircle" description: "Servers in multiple Geographic Zones We care about your data privacy and security as well as creating the most redundant network possible for your Spam." image: "https://www.duocircle.com/images/og-default.png" canonical: "https://www.duocircle.com/blog/spam-filtering/geographically-diverse-spam-filtering-zones/" --- Quick Answer DuoCircle's spam filtering runs across multiple data centers including an Amazon Frankfurt presence in Germany, giving customers a self-healing network and an EU-only filtering option for data residency. As of March 1, 2016, inbound traffic is load-balanced across all zones for 99% of customers using mx1.mailhop.org, mx2.mailhop.org, or a custom MX from the portal. To filter exclusively in the EU, switch your MX to mx1.eu.mailhop.org. To stay in the US only, use mx1.us.mailhop.org. If your firewall sits in front of your mail server, allowlist all DuoCircle IP ranges (not just the regional ones) so traffic still flows during catastrophic failover. Share [ ](https://www.linkedin.com/sharing/share-offsite/?url=undefined%2Fblog%2Fspam-filtering%2Fgeographically-diverse-spam-filtering-zones%2F "Share on LinkedIn") [ ](https://twitter.com/intent/tweet?text=Geographically%20Diverse%20Spam%20Filtering%20Zones&url=undefined%2Fblog%2Fspam-filtering%2Fgeographically-diverse-spam-filtering-zones%2F "Share on X/Twitter") [ ](https://www.facebook.com/sharer/sharer.php?u=undefined%2Fblog%2Fspam-filtering%2Fgeographically-diverse-spam-filtering-zones%2F "Share on Facebook") [ ](https://reddit.com/submit?url=undefined%2Fblog%2Fspam-filtering%2Fgeographically-diverse-spam-filtering-zones%2F&title=Geographically%20Diverse%20Spam%20Filtering%20Zones "Share on Reddit") [ ](mailto:?subject=Geographically%20Diverse%20Spam%20Filtering%20Zones&body=Check out this article: undefined%2Fblog%2Fspam-filtering%2Fgeographically-diverse-spam-filtering-zones%2F "Share via Email") ![spam filtering zones](https://media.mailhop.org/duocircle/images/2016/02/dmarc-report-8311.jpg) #### Servers in multiple Geographic Zones We care about your data privacy and security as well as creating the most redundant network possible for your Spam Filtering needs. We feel that one way to ensure that our network is as robust as possible is to have servers in multiple data centers around the globe. So that if there are any regional or local connectivity problems that the network will be self healing and your mail will continue to flow. To this end we have build out a point of presence in the Amazon Frankfurt Germany data center because it provides not only geographic diversity but also allows our customers in the EU a filtering option that keeps their mail within the boundaries of the European Union. However some customer may prefer to have their email filtered exclusively in the European Union rather than a combination of the USA and Europe. [![email filtered](https://media.mailhop.org/duocircle/images/2016/02/DMARC-report-service-1710.jpg)](https://media.mailhop.org/duocircle/images/2016/02/DMARC-report-service-1710.jpg) For 99% of our customers utilizing mx1.mailhop.org, mx2.mailhop.org or your custom MX record from the portal is your best option. Your messages your messages will be balanced over ALL of our servers, and you’ll benefit from the geographic diversity and even grater redundancy that having filtering servers in multiple region affords. However if you would prefer your email ONLY be filtered in one geographic zone we can accommodate your needs. ## Updating your MX records to use a single filtering zone rather than being globally load balanced To have your email exclusively filtered in the EU please change your MX record to: - **mx1.eu.mailhop.org** Conversely if you’d prefer that you mail never goes to the EU and stays within the United States of America you can use this MX record: - **mx1.us.mailhop.org** [![MX records](https://media.mailhop.org/duocircle/images/2016/02/DMARC-reporting-service-8974.jpg)](https://media.mailhop.org/duocircle/images/2016/02/DMARC-reporting-service-8974.jpg) ## Updating your firewall If you have a firewall in front of your mail server please ensure that you are allowing / whitelisting all of our IP’s (not just the EU), This is important if there is a catastrophic failure and we need to route your email via an alternate location we will still be able to communicate with your mail server. ## Switch Over Date As of March 1 2016 inbound traffic will be load balanced over all zones. ## To Learn More about our Data Centers [https://www.duocircle.com/datacenters/](/datacenters/) ![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/) ## 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. 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