To configure the Spam Filter Client on a Barracuda CloudGen Firewall, a Spam Filter service must be introduced on your firewall. The firewall processes spam in combination with the Mail gateway service following these procedures:
Configure the Spam Filter Client
- Go to CONFIGURATION > Configuration Tree > Box > Virtual Servers > your virtual server > Assigned Services > Mail-Gateway > Mail Gateway Settings.
- In the left menu, select Content Adaptions.
- Click Lock.
- In the Spam Detection section, set Enable Spam Analysis to yes.
- Click Edit to open the Advanced Spam Options window.
- Set the appropriate values for the parameters explained in the sections below.
- Click OK.
Click Send Changes and Activate.
MailGW Settings - Spam Analysis
Parameter | Description | ||
Spam Analyzer IP | This IP address is the bind IP of the Spam Filter service. Optionally, enter a DNS-resolvable hostname. The hostname is used to implement load balancing for high traffic scenarios. | ||
Spam Analyzer Port | This value (default: 783) must correspond with the port defined for the Spam Filter service | ||
Max. Size (MB) | This parameter defines the maximum size an email can have to be processed by the Spam Filter. If the email exceeds this value (default: 1 MB), it will not traverse the filter. Instead, it will be delivered to its recipient without header modification (spam tag). | ||
Timeout (sec) | This parameter defines the maximum allowed duration (default: 60 s) to analyze an email. If the value is exceeded, the email is delivered to its recipient without header modification (spam tag). | ||
Analyze Internal Mails | When set to yes (default: no), mail traffic generated by internal mail domains is also classified. | ||
Deny Threshold | An email is rejected when it exceeds this threshold. The threshold is calculated from an email’s spam score (resulting from the testing sequences) multiplied by 100. To deactivate this parameter, enter a threshold of 0. | ||
Enable Domain Check | This field allows sender domains to be checked. The following options are available:
Domain Check failure results in one of the actions configured through the parameter Domain Action. | ||
Domain Action | This action is carried out if the Domain Check fails:
| ||
Domain Whitelist | This is list of trusted domains, which should be excluded from spam filtering. This list is consulted before the Spam Filter is applied. Top-level and sub domains can be defined E.g., |
Next Step
Continue with How to Configure the Spam Filter Service.