Hi guys
Everything went smoothly, until the machine was brought up. Then I found imapproxy did not want to start. Following phonix's guide:

zmproxyctl status
zmprov gs `zmhostname` | grep zimbraServiceEnabled
zmprov gs `zmhostname` | grep zimbraServiceInstalled
If it's running, then run this:
zmproxyctl stop
zmprov ms `zmhostname` -zimbraServiceEnabled imapproxy
zmcontrol stop
zmcontrol start
To reset the ports run the following (on one line):
zmprov -l ms `zmhostname` zimbraPop3BindPort 110 zimbraPop3SSLBindPort 995 zimbraPop3ProxyBindPort 7110 zimbraPop3SSLProxyBindPort 7995 zimbraImapBindPort 143 zimbraImapSSLBindPort 993 zimbraImapProxyBindPort 7143 zimbraImapSSLProxyBindPort 7993
ps: My ports are slightly different, so the above command was modified to my needs. I got my ports prior to installation by running:
zmprov -l gs <FQDN> | grep Bind
then restart
Everything came up OK.

I would just like to know, by disabling the imapproxy, did I expose my system to any problems? Imapproxy did run prior to the upgrade. (I even went as far as restoring the system to check if it was running prior to the upgrade.)

Times it took me to upgrade (143 users):
Upgrade: 09:09 -> 09:44
SQL Rebuild: 09:46 -> 09:58

Kind regards
Aubrey Kloppers