I have Zimbra Release 5.0.11_GA_2695.UBUNTU8_64 UBUNTU8_64 FOSS edition and I plan to upgrade to 6.0.4 in December.
My questions are:
1# Is there any vantage to update first to 5.0.20 and then to 6.0.4? Or may I upgrade straight to 6.0.4? Because I read some issues with some users when upgrading from some versions of 5.0 to 6.0
2# Is there any upgrade guide for Zimbra Upgrading?