This section highlights the special notices that should be taken into consideration before upgrading your platform.
TFTP firmware install
Using TFTP via the serial console to install firmware during system boot time will erase all current FortiMail configurations and replace them with factory default settings.
Monitor settings for the web UI
To view all objects in the web UI properly, Fortinet recommends setting your monitor to a screen resolution of at least 1280x1024.
Recommended browsers on desktop computers for administration and webmail access
- Internet Explorer 11 and Edge 42, 44
- Firefox 60.8 ESR, 68
- Safari 12
- Chrome 75
Recommended browsers for mobile devices for webmail access
- Official Safari browser for iOS 11, 12
- Official Google Chrome browser for Android 7.0 to 9.0
- FortiSandbox 2.3 and above
For security reasons, starting from 5.4.2 release, FortiMail stopped supporting SSH connections with plain-text password authentication. Instead, challenge/response should be used.