Barracuda Cloud Protection Layer IP address ranges based on the region selected during setup:
Customers Using the Following Instances of the Barracuda Email Security Service Instance
Australia
AU: 3.24.133.128/25
Canada
CA: 15.222.16.128/25
Germany
DE: 35.157.190.224/27
United Kingdom
UK: 35.176.92.96/27
United States
US: 64.235.144.0/20 and 209.222.80.0/21
Ensure Connectivity and Redundancy
Follow these tips to ensure connectivity and redundancy:
- Open your firewall ports to allow the IP address ranges, based on your Barracuda Email Security Service instance
- (Optional) Configure your mail server or router to block inbound email not originating from your Barracuda Email Security Service IP address ranges.
- If you have a Barracuda Web Security Gateway or Barracuda Web Application Firewall: You might need to exempt ess.barracduanetworks.com from filtering.
- Exempt traffic coming from the Barracuda Email Security IP addresses from any kind of throttle or rate controls.