I am thinking that falling back to getpwuid(getuid()) is the most
I notice that a setuid inc(1) has various troubles due to the use of
real user ID rather than effective.
Like ... what? I would have though using the real UID would have been the
correct answer. Also, I didn't even think we supported that; at most
we support setgid to the mail group (and it's a huge pile of code which
I personally would love to get rid of).