127.0.0.1	localhost
#
10.0.1.20	big_serv
#
10.0.20.0	them-net0 first-floor-west
10.0.21.0	them-net1 first-floor-east
10.0.22.0	them-net2
10.0.23.0	them-net3
10.0.24.0	them-net4
#
10.0.20.10	mailx mail-rr
10.0.20.241	our-router
#
10.0.21.10	local-mail mailhost
