Barracuda Email Security Service IP Ranges
Customers Using the Following Instances of the Barracuda Email Security Service Instance
Network Traffic to ESS (SMTP) | Network Traffic from ESS (SMTP and other) | |
---|---|---|
Australia (AU) | 3.24.133.128/25 | 3.24.133.128/25 |
Canada (CA) | 15.222.16.128/25 | 15.222.16.128/25 |
Germany (DE) | 35.157.190.224/27 18.185.115.192/26 18.184.203.224/27 | 35.157.190.224/27 |
United Kingdom (UK) | 35.176.92.96/27 18.133.136.128/26 18.133.136.96/27 | 35.176.92.96/27 |
United States (US) | 64.235.144.0/20 209.222.80.0/21 | 64.235.144.0/20 209.222.80.0/21 |
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.barracudanetworks.com from filtering.
- Exempt traffic coming from the Barracuda Email Security IP addresses from any kind of throttle or rate controls, RBL, and SPF or DKIM scanning.
Manage Support and Partner Access
Manage Barracuda Networks Support and partner access to messages from the Support tab in the Barracuda Email Security Service.
Support Access
Barracuda support access is enabled by default. To disable access, click Disable Support Access. Note that you must enable Support Access to allow Barracuda Networks Support to investigate message content.
Partner Access to Messages
Partner access to messages is enabled by default. To disable access, click Disable Message Body Access. When disabled, partners can continue to manage your accounts but cannot view the content (message body) of emails for these accounts.