Ldap filter MTA option

Direct LDAP attribute name MTA options:  (LDAP attribute name)
The  MTA option specifies the name of the LDAP attribute which will store the Sieve filter  of the user or group.

The schema sets an ACI on the default attribute,  , to allow user modification.

See also:
 * Direct LDAP attribute name MTA options
 * alias_filter Option
 * Sieve filters
 * Access controls on LDAP attributes