I can't join to a windows domain

Good morning to everybody, I’m new to rockstor (2 days ago) and i’m trying to join the rockstro server to a Windows 2012 domain, so i can assign permissions to the folders within a share to different Windows users.
I have installed the rockstar server in a cpu with a i5-650 procesor, 8 gb of ram and 2 320 gb disks
I’m using the following configuration rockstor.empresur.local dc.empresur.local (domain controler) Gateway
search domains empresur.local

with 1 share and ntp service enabled

Brief description of the problema

when i try to join the domain activating the active directory service, i get various error screen, i’m sure i’m forgetting something, but i can’t find more detailed help in this topic

Web-UI screenshot

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