leaking diesel fuel 2003 f 250 superduty on 2003 Ford F-250 Super Duty

when you start my 2003 ford f250 it starts leaking diesel fuel from under the front of the truck any ideas on what it could be

Asked by for the 2003 Ford F-250 Super Duty
Nothing comes to mind at first; a good physical inspection is in order to see what is leaking!
1 more answer
sounds like the fuel filter drain valve has gone bad