Sophos XG LDAP (Domain) Join

Question

Sophos XG V1 
 I want to join Sophos Firewall to LDAP domain, I ahve Zentyal V5.0.8 as my primary Domain Controller. 
 
 While Joining Domain I am confused in these fields, Please help me to join Sophos in my LDAP Domain. 
 I have little bit idea about Base DN rest I am confused where I can find. 
 
 Base DN* 
 Authentication Attribute* 
 Email Addr Attribute * 
 Group Name Attribute* 
 Expiry Date Attribute*

jack admin · Accepted Answer

I followed the link below it worked for me :) 
 
 community.sophos.com/.../347889

lferrara · Answer

Jack, 
 you should follow the Vendor user guide in order to get the proper information. LDAP is a standard and XG uses as a Standard. 
 Have a look here: 
 https://forum.zentyal.org/index.php?topic=25644.0 
 Regards