I already disabled IPv6 in /etc/hosts & in /etc/sysctl.conf

ZCS NE 7.1.4
yes, I know. I'm migrating it to CentOS 6 and after properly configured livesync, only then I will upgrade it to 7.2, finally to 8.7.5

Unbound server sockets not implemented zmmailboxdctl.out show below error but there's no port 110 being used Zimbra server reserving server socket port=110 bindaddr=null ssl=false Zimbra server reserving server socket port=995 bindaddr=null ssl=true Fatal error: exception while binding to ports java...

I also tried commenting and deleting IPv6 line in /etc/hosts, and restart zimbra services but it still failed to start

#::1 localhost localhost.localdomain localhost6 localhost6.localdomain6

below are CRITICAL messages that keeps repeating in zmconfigd.log [zimbra@mta2 ~]$ grep "2017-03-28" log/zmconfigd.log | grep CRITICAL | uniq 2017-03-28 13:11:50,967 zmconfigd CRITICAL [21680-MainThread] zmconfigd started on mta2.domain.my with loglevel=3 pid=21680 2017-03-28 13:12:55,907 ...

I followed steps in https://paulgraydon.co.uk/posts/2011-12 ... -upgrades/
and got zmsetup.pl to finish although there zmmailboxd and zmconfigd is not running, but those are other issues.

would it help adding new domain minus hostname?

in install_history, it seems that config does not ended when I ran zmsetup.pl

on my setting is "http://www.zimbra.com/aus/admin/zimbraAdminVersionCheck.php"

If you compared size of 8.6 installer to 8.7, 8.6 is bigger by more than 700MB

# tail /tmp/zmsetup.03282017-004637.log Stopping logger...Done. Tue Mar 28 00:46:46 2017 done. Tue Mar 28 00:46:46 2017 Verifying /opt/zimbra/conf/my.cnf Tue Mar 28 00:46:47 2017 Starting mysql... Tue Mar 28 00:46:47 2017 *** Running as zimbra user: /opt/zimbra/bin/mysql.server start Starting mysql...