403 vs. 400 response from server?

Mike Meyer (mwm@contessa.phone.net)
Fri, 14 Apr 1995 13:51:24 +0500


Can someone explain where one should use a 403 response versus a 400
response? Is using 400 only for mailformed requests, and 400 for
requests with a command that isn't understood a reasonable
interpretation?

Thanx,
<mike