It appears as if your predecessor has installed the posixAccount and samba admin zimlets. Summary: that's a way to make your zimbra server a samba domain controller as well. Check
the zimbra wiki if you're interested.
I'm quite sure this is what is causing the error. Big question is: is your zimbra server really the primary domain controller?
- If yes: you will probably want to fix this. I would start by checking the version of the Samba and NIS schemas installed in your /opt/zimbra/openldap/etc/openldap/schema . However, since you did a zimbra upgrade, chances are the schema's are not present at all. Anyway, when you update samba (e.g. via yum) you also need to manually copy the (possibly) updated schema here.
Also check if these lines are present in your /opt/zimbra/conf/slapd.conf.in
Code:
include "/opt/zimbra/openldap/etc/openldap/schema/nis.schema"
include "/opt/zimbra/openldap/etc/openldap/schema/samba.schema"
- If no: disable or undeploy the "zimbra_posixAccount" and "zimbra_samba" zimlets via the cli using zmzimletctl .