A few more Greylisting questions

As I understand it Greylisting uses it's own whitelist.  So to allow
local networks to bypass the embargo they would need to be in
"grey_whitelist" and "dbclean -G" would need to be run?

Also, what does it look like in userdirs?  Do messages get logged when
they are first embargoed?  Can the user have a "grey_whitelist"?

Thanks,

->Spike