Ldap routing address MTA option

Direct LDAP attribute name MTA options:  (LDAP attribute name)
The  MTA option specifies the name of a user or group LDAP attribute, by default , used to specify an address to which to route, overriding (as of MS 6.0) the usual   and    interpretation.

See also:
 * ldap_mailhost MTA Option
 * ldap_delivery_option MTA Option
 * Direct LDAP attribute name MTA options