ExchangeDefender Grows Again | ExchangeDefender [ Skip to content ](#main) [ ![ExchangeDefender](/assets/images/xd_logo_blue.png) ](/) Email Security ![Platform Overview](/assets/images/m-xd-pro.png)### ExchangeDefender PRO Enterprise-grade email security made simple for every business. [Sign Up](/sign-up) [Live Demo](/demo) [Email Security Stops spam, malware & phishing in real time. ](/email-security) [Encryption Secure your emails, attachments & sensitive data. ](/corporate-email-encryption) [Web File Sharing Easy, safe cloud file sharing with access control. ](/web-file-server) [Live Archive Locked-in email backup & continuity during outages. ](/livearchive-backup) [Emergency Inbox Keep email flowing without interruption if your provider fails. ](/inbox) [Spearphish Train your team with phishing simulations & risk tracking. ](/spearphishing) Managed Email ### Enterprise-Grade Managed Email Reliable, secure, and fully managed email operations for modern organizations. ![ExchangeDefender](/assets/images/managed_email_menu.png) [Microsoft365/Google Email Management Expert management and security for Microsoft 365 and Google Workspace email. ](/managed-email-operations) [AI Advisory Secure, practical AI consulting & implementation for SMBs. ](/management-ai) Company ### ExchangeDefender: 29+ Years of Trust We are a cybersecurity company focused on business email protection, with 29+ years of experience keeping organizations secure, connected, and resilient. ![ExchangeDefender](/assets/images/careers_1.png) [ About Us Learn our purpose, values, and the mission behind every decision. ](/about-us) [ Blog News, product updates and email security insights. ](/blog) [ Capabilities Discover the tech and expertise that keep your email secure around the clock ](/capabilities) [ Careers Be part of a team using modern tech to solve real threats and ship great work. ](/careers) [Partners](/partners) [Docs](/docs) [Contact Us](/contact) Talk to a Human Open menu Menu ---- Email Security [Email Security](/email-security) [Encryption](/corporate-email-encryption) [Web File Sharing](/web-file-server) [Live Archive](/livearchive-backup) [Inbox](/inbox) [Spearphish](/spearphishing) Managed Email [Microsoft365/Google Email Management](/managed-email-operations) [AI Advisory](/management-ai) Company [About Us](/about-us) [Blog](/blog) [Capabilities](/capabilities) [Careers](/careers) [Partners](/partners) [Docs](/docs) [Contact Us](/contact) Talk to a Human March 17, 2010 · [ExchangeDefender](https://www-preview.exchangedefender.com/blog?category=exchangedefender) ExchangeDefender Grows Again ============================ First of all, thank you for your tremendous support of ExchangeDefender 5 and to all of our partners that make it possible for us to keep on building ExchangeDefender and growing it into a significant part of business. We’re growing again – and with growth comes responsibility to do it in a way that is reliable and improves availability – so we’re announcing a new IP address range that ExchangeDefender will soon start delivering mail from: > Introducing ExchangeDefender – LA3: > > 206.125.40.0/24 (or: 206.125.40.0/255.255.255.0) If you are currently using IP restrictions (highly recommended) please add the range above to your IP restriction list which should include at least 65.99.255.0/24 and 64.182.140.0/24. You can [download the Exchange 2003 and 2007 IP Restriction Guide here.](http://www.ownwebnow.com/media/ExchangeDefenderIPRestrictions.pdf) The process takes less than a minute so please take care of it as soon as possible, by March 29th, 2010 at the latest. For your convenience, here is a guide on how to add this new range to Exchange 2003 and 2007. If you’re enforcing restrictions on your firewall then it will depend on the manufacturer but should be pretty straight forward. ### **Exchange 2003** 1\. Open Exchange System Manager 2\. Expand Servers, **servername**, Protocols, SMTP 3\. Go to properties on Default SMTP Virtual Server 4\. Go to the Access Tab and then click connections [![clip_image001](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image001_thumb.png)](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image001.png) 5\. Click Add on the IP restrictions and select Group of computers. The subnet address is 206.125.40.0/24 [![clip_image002](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image002_thumb.png)](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image002.png) Confirm that you still have at least 65.99.255.0/255.255.255.0 and 64.182.140.0/255.255.255.0 present. Do not remove any IP ranges. ### Exchange 2007 1\. Open Exchange Management Console 2\. Expand Server Configuration and select Hub Transport [![clip_image003](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image003_thumb.png)](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image003.png) 3\. On Exchange 2007 select Default **servername** receive connector and go to properties a. On SBS, the connector may be called SBS **servername** Internet 4\. Navigate to the Network tab and click add on **Receive Mail from remote servers that have this IP address** and set the IP as 206.125.40.0/24 [![clip_image004](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image004_thumb.png)](http://www.ownwebnow.com/blog/media/ExchangeDefenderGrowsAgain_9B79/clip_image004.png) Confirm that you still have at least 65.99.255.0/255.255.255.0 and 64.182.140.0/255.255.255.0 present. Do not remove any IP ranges. ### Support If you have any questions or concerns please open a support request at [https://support.ownwebnow.com](https://support.ownwebnow.com). We’ll begin notifying clients via phone, email and postal mail (US only) starting 3/17/2010. [ Previous post ConnectWise Integration Released March 3, 2010 ](https://www-preview.exchangedefender.com/blog/2010/03/connectwise-integration-released) [ Next post Extending White-label Branding for ExchangeDefender March 22, 2010 ](https://www-preview.exchangedefender.com/blog/2010/03/extending-white-label-branding-for-exchangedefender) Related Posts ------------- [ ![](https://storage.services.exchangedefender.network/exchangedefender-blog/blog/2026/04/xd10.png) 2 Apr ](https://www-preview.exchangedefender.com/blog/2026/04/announcing-exchangedefender-10)### [Announcing ExchangeDefender 10](https://www-preview.exchangedefender.com/blog/2026/04/announcing-exchangedefender-10) [Read more: Announcing ExchangeDefender 10](https://www-preview.exchangedefender.com/blog/2026/04/announcing-exchangedefender-10) [ ![](https://storage.services.exchangedefender.network/exchangedefender-blog/blog/2025/09/Top-7-IT-Solutions-Every-Small-Business-Needs-in-2025.jpg) 30 Sep ](https://www-preview.exchangedefender.com/blog/2025/09/top-7-it-solutions-every-small-business-needs-in-2025)### [Top 7 IT Solutions Every Small Business Needs in 2025](https://www-preview.exchangedefender.com/blog/2025/09/top-7-it-solutions-every-small-business-needs-in-2025) [Read more: Top 7 IT Solutions Every Small Business Needs in 2025](https://www-preview.exchangedefender.com/blog/2025/09/top-7-it-solutions-every-small-business-needs-in-2025) [ ![](https://storage.services.exchangedefender.network/exchangedefender-blog/blog/2025/09/Website-Active-Image-10.jpg) 23 Sep ](https://www-preview.exchangedefender.com/blog/2025/09/exchangedefender-rolls-out-advanced-reject-policies-for-safer-inboxes)### [ExchangeDefender Rolls Out Advanced 'Reject Policies' for Safer Inboxes](https://www-preview.exchangedefender.com/blog/2025/09/exchangedefender-rolls-out-advanced-reject-policies-for-safer-inboxes) [Read more: ExchangeDefender Rolls Out Advanced 'Reject Policies' for Safer Inboxes](https://www-preview.exchangedefender.com/blog/2025/09/exchangedefender-rolls-out-advanced-reject-policies-for-safer-inboxes) Search the blog Search Recent Posts ------------ - [ExchangeDefender New UI is Live](https://www-preview.exchangedefender.com/blog/2026/05/exchangedefender-new-ui-is-live) - [Announcing ExchangeDefender 10](https://www-preview.exchangedefender.com/blog/2026/04/announcing-exchangedefender-10) - [Merry Christmas](https://www-preview.exchangedefender.com/blog/2025/12/merry-christmas) - [Why IoT Devices Are a Hidden Security Risk for Your Business](https://www-preview.exchangedefender.com/blog/2025/11/why-iot-devices-are-a-hidden-security-risk-for-your-business) - [Top 5 IT Problems Small Businesses Face in 2025 — and How to Fix Them](https://www-preview.exchangedefender.com/blog/2025/10/top-5-it-problems-small-businesses-face-in-2025-and-how-to-fix-them) Categories ---------- - [Archiving](https://www-preview.exchangedefender.com/blog?category=archiving) (21) - [Business Continuity](https://www-preview.exchangedefender.com/blog?category=business-continuity) (13) - [Compliance](https://www-preview.exchangedefender.com/blog?category=compliance) (8) - [ExchangeDefender](https://www-preview.exchangedefender.com/blog?category=exchangedefender) (349) - [General](https://www-preview.exchangedefender.com/blog?category=uncategorized) (590) - [Hosted Services](https://www-preview.exchangedefender.com/blog?category=hosted-services) (86) - [Industry News](https://www-preview.exchangedefender.com/blog?category=industrynews) (29) - [Marketing](https://www-preview.exchangedefender.com/blog?category=marketing) (18) - [Phishing](https://www-preview.exchangedefender.com/blog?category=phishing) (5) - [PRO TIPS](https://www-preview.exchangedefender.com/blog?category=pro-tips) (44) - [Product Features](https://www-preview.exchangedefender.com/blog?category=product-features) (54) - [Security](https://www-preview.exchangedefender.com/blog?category=security) (65) - [Shockey Monkey](https://www-preview.exchangedefender.com/blog?category=shockey-monkey) (22) - [Spamfilter](https://www-preview.exchangedefender.com/blog?category=spamfilter) (5) - [Support](https://www-preview.exchangedefender.com/blog?category=support) (45) - [Webinars](https://www-preview.exchangedefender.com/blog?category=webinars) (44) Solutions --------- - [Stop Spam & Malware](/email-security) - [Hands-Free Email Backup](/livearchive-backup) - [Instant Email Recovery](/inbox) - [Send Private Emails](/corporate-email-encryption) - [Train Against Email Threats](/spearphishing) - [Share Files Safely](/web-file-server) Company ------- - [About ExchangeDefender](/about-us) - [Compliance & Legal](/our-compliance) - [Become a Partner](/partners) - [Support Portal Login](https://support.exchangedefender.com/) - [Microsoft 365 Email Management](/managed-email-operations) - [AI Advisory Service](/management-ai) ![ExchangeDefender](/assets/images/dark-xd-logo.png)USA: +1 (407) 465-6800 United Kingdom: 0800 8620149 Australia: +61 0390010641 Fax: +1 (954) 839-8737 [ ](https://www.facebook.com/ExchangeDefender) [ ](https://www.twitter.com/XD_Defender) [ ](https://www.linkedin.com/company/exchangdefender) [ ](/blog) © 2026 Own Web Now Corp - All rights reserved </> with ❤️ in Orlando [SLA](/sla) [TOS](/tos) [PRIVACY](/privacy-end-users) [AUP](/aup) We're Here to Help 👋 -------------------- Tired of AI 🤖 and hold music? 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