Beautiful :0 I suppose same process applies to aliases with appropriate changes to filenames.
Should be.
Is this all that's required to import virtual e-mail users into RAQ4i?
Well, they won't be properly figured into the quota calculations, etc. They really should be added to the PostgreSQL database, have home directories set up under the appropriate virtual sites, etc.
But if you just want them to be email users, then yes, it should be sufficient.
How about the passwords then? Where do they go?
/etc/passwd and /etc/shadow. That will be more complicated to accomplish... sorry, I don't have a quick-and-easy script to do that, but I'm sure something like that must exist out on the 'net someplace...