Ldap domain attr catchall address MTA options

Direct LDAP attribute name MTA options:  (LDAP attribute name(s))
The  MTA option specifies the name of an LDAP attribute (by default  ) -- or a list of such names -- used to store a "catch all" address for the domain: an address to which to route any messages to recipients apparently in the domain but with an  unrecognized local-part (unknown-user@domain-name).

See also:
 * Direct LDAP attribute name MTA options
 * ldap_domain_attr_catchall_mapping MTA Option