Technical Tip: Troubleshoot NTP synchronization is...

gcortes1 · 11-24-2025

Description This article describes how to validate the authentication between a FortiMail and an email server. Note: This procedure is not valid for Office365. Scope FortiMail. Solution Validate the type of encoding used by the Email server: in this ...

gcortes1 · 11-24-2025

Description This article describes how to diagnose remote authentication for RADIUS administrators. Scope FortiMail. Solution The RADIUS configuration for administrator login is described in the following document: Technical Tip: FortiMail remote wil...

gcortes1 · 09-09-2025

Description This article describes how to handle an issue where a URL is rejected for SPAM in FortiMail Cloud.The message of rejection is similar to: This email from IP xxx.xxx.xxx.xxx has been rejected. The email message was detected as spam. FortiG...

gcortes1 · 08-17-2025

Description This article describes how to modify the default file analysis size in FortiSandbox. This can be useful, for example, when it is necessary to send a file larger than the default value defined in FortiSandbox. Scope FortiSandbox all versio...

gcortes1 · 07-22-2025

Description This article describes how to create a list of URLs that are exempt from FortiGuard Antispam rating.This can be useful in certain cases. For example: a FortiGuard URL classification is temporarily incorrect, and an exception needs to be c...

gcortes1 · 09-08-2025

The equipment must ultimately be out of support; please consider this before proceeding.First, review the management conditions in accordance with the following document:https://docs.fortinet.com/document/fortigate/hardware/fortigate-40c-quickstart-g...

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Technical Tip: How to validate the authentication between FortiMail and an email server

Technical Tip: How to diagnose RADIUS authentication for administrators

Troubleshooting Tip: Email is rejected with the error message: 'This email from IP xxx.xxx.xxx.xxx has been rejected. The email message was detected as spam. FortiGuard AntiSpam Or FortiGuard WebFilter'

Technical Tip: How to modify the size of a file for scan.

Technical Tip: How to create exceptions to the FortiGuard Antispam Rating Analysis

Re: FortiGate 40C won’t boot – only PWR LED on, no console output

Technical Tip: Troubleshoot NTP synchronization is...

Troubleshooting Tip: Error message when a sniffer ...

Technical Tip: How to obtain the classification of...

Troubleshooting Tip: 'Invalid license Duplicated'

Troubleshooting Tip: FortiMail displays error: 'Fo...

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