[Samba] Multiple LDAP backends with different search base

[David Touzeau]

Dear 

I would like Samba query multiple LDAP backend servers

According documentation 
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passdb backend = "ldapsam:ldap://192.168.1.60/ ldap://192.168.1.61/
ldap://192.168.1.62/"

Will do the trick 

but i have different settings according 
ldap suffix,ldap group suffix and ldap admin dn

How to define different suffix and LDAP admin dn for all LDAP backends ?