Here my /etc/hosts
# hosts This file describes a number of hostname-to-address
# mappings for the TCP/IP subsystem. It is mostly
# used at boot time, when no name servers are running.
# On small systems, this file can be used instead of a
# "named" name server.
# Syntax:
# IP-Address Full-Qualified-Hostname Short-Hostname
# localhost.localdomain mail

Here the Error:
ERROR: Installation can not proceeed. Please fix your /etc/hosts file
to contain:

Where is the ip address of the host,
is the FULLY QUALIFIED host name, and
is the (optional) hostname-only portion

I would like to use Zimbra to FETCH email pop account, is it possible with Zimbra, once the error above is fixed?