Troubleshooting Tip: Settings are not saved when enabling Fortiguard Spam Filtering options under an Email Filter profile

[Anonymous]

Description	This article describes how to fix an issue where settings are not saved when trying to enable Fortiguard Spam Filtering options under an Email Filter profile. Note that the Email filter profile feature needs to be enabled from System -> Feature visibility.
Scope	FortiGate.
Solution	This behavior occurs because FortiGuard Spam Filtering features are only available when the email profile is changed to proxy-based. By default, the email profile is set to flow-based. This is expected behavior as outlined in the administration guide. To change the email filter profile to proxy-based, make the following changes in the CLI: config emailfilter profile edit "test" set feature-set proxy end Changes for proxy mode in low-end devices: For low-end model devices with 2GB or less memory RAM, proxy-based inspection features will be removed to optimize performance since v7.4.4. Validate these changes before upgrading the FortiGate:  Technical Tip: FortiGate with 2 GB RAM or less no ... - Fortinet Community