Hola a tod@s. Tengo un problema a la hora de instalar Zimbra Corporation en mi Ubuntu 14.04. Me da este error

  ERROR: Installation can not proceeed.  Please fix your /etc/hosts file
  to contain:
 
  <ip> <FQHN> <HN>
 
  Where <IP> is the ip address of the host,
  <FQHN> is the FULLY QUALIFIED host name, and
  <HN> is the (optional) hostname-only portion

En mi archivo /etc/hosts tengo esto:

127.0.0.1       localhost               localhost
127.0.0.1       server-zimbra           localhost
192.168.1.5     mail.mydomain.com       mail
# The following lines are desirable for IPv6 capable hosts
#::1     ip6-localhost ip6-loopback
#fe00::0 ip6-localnet
#ff00::0 ip6-mcastprefix
#ff02::1 ip6-allnodes
#ff02::2 ip6-allrouters

Gracias.