Ldap check header MTA option

Direct LDAP attribute name MTA options:  (LDAP attribute name)
New in Messaging Server 7.0.5.

The  MTA option is used to specify the name of a group attribute used to determine whether or not the message header should be checked for duplication of list recipient addresses. The option does not have a default value.

If the specified attribute has a value of " ", the list copy for the recipient specified in the header will jettisoned. If the value is " ", the system will behave as if the system Sieve had performed a   on the list copy for that recipient.

The same capability is also available to aliases defined in the alias file or database via the (also new in Messaging Server 7.0.5)   named  parameter, or in Unified Configuration via the   alias option.

This capability depends on address typing being enabled - either the   or    channel option needs to be set on the source channel.

Although this capability has the potential to reduce unwanted message duplicates, &#x2a;extreme&#x2a; care should be exercised when it is used. Headers fields are trivially forged, making it possible to send a message that claims to have been sent to someone when in fact it has not. This could potentially be used to suppress the list copy for a given recipient.

See also:
 * Alias file named parameters
 * alias_header_check Option
 * addrtypescan Option
 * addrtypescanbccdefault Option
 * Sieve discard and jettison actions
 * Direct LDAP attribute name MTA options