We will have multiple Service Desk projects, one for each Customer organization, with each project corresponding to their own customer Portal. We would like customers to be able to self sign up for their portals, rather than agents creating them, but we want to restrict access to each portal based on customer domain.
We do not see how this would be accomplished. It seems as though either Agents need to grant access to portals by adding them to the project customer list, or anyone can self sign up for access to our portals.