Postscreen white listing based on MX, SPF

[Lefteris Tsintjelis]

Is it possible to add points to clients based on valid SPF (-/~all) and/or 
valid MX records? For example, give points to a client if it is a valid MX, 
and/or, give points again if listed in SPF with -all, give less points if valid 
client but SPF is ~all etc.