- Products
- Network Security
Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
Security ServicesComprehensive security for your network security solution
Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
Capture ATPMulti-engine advanced threat detection
Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
Secure Mobile AccessRemote, best-in-class, secure access
Wireless Access PointsEasy to manage, fast and secure Wi-FI
SwitchesHigh-speed network switching for business connectivity
- Email Security
Email SecurityProtect against today’s advanced email threats
- Cloud Security
Cloud App SecurityVisibility and security for Cloud Apps
Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
Capture ClientStop advanced threats and rollback the damage caused by malware
Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
- Products
- Network Security
- Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
- Security ServicesComprehensive security for your network security solution
- Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
- Capture ATPMulti-engine advanced threat detection
- Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
- Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
- Secure Mobile AccessRemote, best-in-class, secure access
- Wireless Access PointsEasy to manage, fast and secure Wi-FI
- SwitchesHigh-speed network switching for business connectivity
- Email Security
- Email SecurityProtect against today’s advanced email threats
- Cloud Security
- Cloud App SecurityVisibility and security for Cloud Apps
- Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
- Capture ClientStop advanced threats and rollback the damage caused by malware
- Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
How to Setup O365 Connector to use with SonicWall Hosted Email Security
09/21/2021 
21 People found this article helpful
21,786 Views
Description
NOTE: Per recommendations from Microsoft (Click here), follow this KB to reduce the likelihood O365 will throttle inbound messages from SonicWall Hosted Email Security and thus, create delivery delays.
In O365
- Login to Microsoft Exchange Admin Center as an Admin of the Organization
- On the Left Navigation Bar, select Connectors (https://admin.exchange.microsoft.com/#/connectors)
- Click on “Add a connector” to add and configure a new Connector that applies security policy for emails routed from SonicWall Hosted Email Security.
- On the “Add a connector” Wizard.
New Connector
- Select “Partner organization” as “Connection from” for the New Connector. The only option for “Connection to” will be “Office 365”. Click Next.
Name
- Configure the Name for the Connector as “Inbound Email From SonicWall HES” and opt to “Turn it on”. Click Next.
Authenticating sent email
- Select "By verifying that the IP address of the sending server matches one of the following IP addresses, which belong to your partner organization
- Please add the following individual IP addresses.Do not summarize into a CIDR notated Subnet as that will include additional IP addresses.
TIP: Microsoft does not support ranges at the time this article was written thus you must individually add each IP listed in the range below that coincides with your HES location (North America or European Union).- HES NA
- 204.212.170.10
- 173.240.214.106 - 173.240.214.120
- HES EU
- 173.240.221.3
- 173.240.221.26 - 173.240.221.29
- HES NA
- Add each IP in the box and Click on +
Security Restrictions
- Ensure the option “Reject email messages if they aren’t sent over TLS” is selected
Review Connector
- Review the Configuration of the new Connector. And click “Create Connector”
- Saving the connector will ensure that the security restrictions are applied on email messages from SonicWall Hosted Email Security. It will also inform Microsoft O365 to expect these IPs to send a greater than normal amount of messages and therefore reduce the likelihood O365 will throttle these inbound messages creating a delivery delay.
Related Articles
- How to enable SNMP on Email Security?
- How do I collect SonicWall product diagnostic information?
- Cannot connect to LDAP Server on port 389, 3268 and 636.
YES
NO