I got this error when installed ZIMBRA (( I dont know why.

This is my hosts file:

127.0.0.1 localhost
127.0.0.1 debian.aster.net.pl debian
192.168.24.101 zimbra.bleee.pl zimbra
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts


Is this ok? IF it's not please fix it for me .