SIQ: reputation prior to delivery

I'm fascinated with GOSSiP and it's a pleasure to find out that Mark is on
the  IAR list. See what you've done, John? And why didn't you do it before
;)

The SIQ protocol isn't for end users, nor is it post delivery. A person
could find ways to pervert it into such a use. Now I remember, I kept
pressing Anthony to include a way for me to instruct the server how to
process my query, for example so I could select different config for
different domains, or down the road for post-DATA queries. So I see where
you may have concluded that the SIQ protocol was for use post-DATA.
Actually we only added that for the sake of flexibility. I use it
completely pre-DATA.

Sticking to how we use it and how it was conceived, all happens right
after MAIL FROM: in the SMTP conversation.

Query consists of:

an IP (the outbound server attempting delivery)

a domain (RHS of envelope-from)

any special instructions for the type of processing desired or if none,
default processing for the query client is used (recognized by the source
IP of the query.)

various housekeeping protocol stuff like query ID and so forth

Query response consists of: