I know I can iterate all my lists and get any email addresses set for each document library but this seems very ineffecient and I am assuming SharePoint stores a list of valid email addresses and document library mappings some where. Is my assumption correct?
If it is can I get access to that list through the API? Even if my assumption is wrong, is there way to get the email addresses without iterating all the lists?
By the way, an stsadm command or something in UI would work just as well.