8.8.10 -> 9.0

[diagram]

Hi,

actually i have a zimbra server with centos 7 and Zimbra 8.8.10, i have install a new server with Ubuntu 18.04 and Zimbra 9
how can i migrate user account, mails, calendar, contact ... ?

i try with Zextra backup but the zextra backup version of zimbra 8.8.10 is 2.12.3 and zimbra 9 3.0
it is not compatible

Another question, does my 8.8.10 Zimbra Licence ok for 9.0 ?

Thanks

[diagram]

how can i upgrade zextra backup on Zimbra 8.8.10 ?

thanks

[Klug]

Download last version from their website, un-archive it and launch "./install.sh all".