I´ve already found articles like Moving ZCS to another server.
My situation: I have a server (in a datacentre where I have no physical access) running my ZCS (Opensource edition) on Debian. The version is
The hostname is mailhost.mydomain.com. Now I have a new server (in another datacentre, other IP address, also running Debian, but newer version) and I want to migrate ZCS to that server. The new hostname should be mail.mydomain.com. At the moment there is only this one MX record for my domain:
Release 6.0.3_GA_1915.DEBIAN4.0 DEBIAN4.0 FOSS edition.
The question is now: At what point in the tutorial should I change the MX record. Will I have to run both zimbra servers some days parallel for to not loose mails?
MX mailhost.mydomain.com. 100
And what about the hostname? Should I install ZCS on the new server with the old hostname mailhost.mydomain.com and migrate the data and then change hostname to mail.mydomain.com or will this be a problem?
Thanks for your help!