I've just checked two fortmails with latest OS 5.1.
It seems to be vulnerable for LogJam attacks.
When will there a new Firmware be available?
did you enable this setting and scan for log jam again?
config system global
set strong-crypto enable
also, a support ticket should get you an answer if that does not help.
FG200D 5.6.5 (HA) - primary
[size="1"]FWF50B' s 4.3.x, FG60D's 5.2.x, FG60E's 5.4.x [Did my post help you? Please rate my post.][/size]
FAZ-VM 5.6.5 | Fortimail 5.3.11