Order of execution

Hi all,

When processing whitelists, what order does GPS use? For example, say I'm hosting many domains, can I:

1) Add a default wl_pattern to disable greylisting for the entire domain
2) Add user-by-user entries for those who want greylisting

and only have emails to the users who want greylisting enabled processed, while the rest of the domain passes through without any interaction from gps?

Cheers,

Collin