"/" in LDAP OUs deny users to authentificate

Dear community,

we have Wildfire Server 2.6.1 running on Redhat AS 3. Our users came from MS Active Directory. But we have “/” in our OU naming structure (and it’'s impossible to change them) like OU=“Billing/Charging Department”. Users, placed in that OUs can not authenticate in Wildfire. As far as I know, “/” should be escaped with another “/” before like “//”. Is it possible to make that users happy?

So, this problem is unresovlable?