Technical Tip: Remove hyperlinks

Description

This article describes how to remove all hyperlinks in any received email unless the URL matches the URL exempt list.

Scope

FortiMail.

Solution

From the GUI, go to Profile -> Content -> Content and create a new 'Content Profile'.

Go to Content Disarm and Reconstruction, enable the 'HTML content', and set 'Remove' for the URL.

Apply the new content profile to the recipient policy accordingly.

Go to Security -> Disarm & Reconstruction -> URL -> URL Removal -> Category and choose the URL filter profile 'all'.

Go to Security -> URL Filter -> Override Rating.

Create a new Override Rating. For this example, the URL www.fortinet.com is exempted as below.

In the URL Category Profile 'all', make sure the category for 'local' is disabled to exclude this category from being removed.

Result:

All the URLs are removed except the URL https://www.fortinet.com/ because it is matched to the URL exempt list.

FortiMail version 8.0.x: 

Office File Metadata and HTML Hidden Content Handling feature is added.

GUI:

CLI:

The metadata-type-option can be configured and customized:

FML#config file content-disarm-reconstruct

FML(content-disarm~r) # set metadata-type-option 

  --- current value ---
metadata-type-option:  office-template office-property office-version office-comment office-track-change office-field office-hidden-text office-footnote office-watermark