This is probably a stupid question, but I've been looking for an
answer for several hours now.
I've got a site companyA.com. There are various employees of this
company that have home directories on this system.
There are others that don't work directly for this company, and I do
not want them having access to this particular machine. I'd like to
set up entirely fake email addresses and have their email
At the same time, we of companyA need to be able to email these and
other users of companyB.
How do I set all of this up?