I have a multiserver setup with zimbra 8.0.6 like the following

mta
proxy
ldap/ms/logs

The order of the upgrade suggest first upgrade ldap, then mta, then proxy, and last ms..

the first and the last suggested upgrade is in the same box. I simply proceeded updating the ms box first and it worked out alright, but i wonder if this is the best way or why is there an order at all?

thanks in advance