I have a Zimbra running with around 100 active users. The current version is 3.0.1. During installation of previous versions I used some hostname that does is not resolvable in extenal DNS server, which causes alert messages if connecting through SSL. I want to update the hostname of the installation, but I am afraid to do it, since it is a production installation.
Can I do it during upgrade, when I am being asked for hostname ? Will it impact anything else ? Is there a chance that the system will stop working ?
Thanks in advance.