Skip to main content
alya
Staff
Staff
July 2, 2026

Technical Tip: Blank Email Body When Viewing System Quarantine Messages Using Mozilla Firefox

  • July 2, 2026
  • 0 replies
  • 20 views

Description

This article describes an issue where the email body appears blank when viewing messages in the System Quarantine using Mozilla Firefox.

Scope

  • FortiMail 7.6.4 and below.

  • Mozilla Firefox.

Solution

In the affected FortiMail versions, administrators may observe that the email body is not displayed when viewing quarantined messages from the System Quarantine page using Mozilla Firefox.

Symptoms:

When navigating to:

Monitor -> Quarantine -> System Quarantine -> Bulk/Current,
and then selecting View for a quarantined email, the message window opens, but the email body is blank.

Expanding the message and selecting Show Remote Content does not display the email content.

Example:

fd0b875c.png


406fa86e.png


Workaround:

The email content can still be viewed from the mail history logs.

  1. Navigate to Monitor -> Log -> History.

  2. Locate the quarantined email.

  3. Right-click the log entry.

  4. Select View Quarantined Message.

The email body is displayed correctly.

This issue occurs only when accessing the FortiMail GUI using Mozilla Firefox.
It does not affect mail processing or the quarantined message itself.
The issue is limited to the rendering of the email body in the browser.

Permanent solution is to upgrade the FortiMail to v7.6.5.