Ldap detourhost optin MTA option

Direct LDAP attribute name MTA options:  (LDAP attribute name)
The  MTA option specifies the name of a user or group LDAP attribute  which may be used to specify "opt-in" to "detour" routing, as  specified by the   channel option. Normally the presence of the specified attribute on a user or group entry causes "opt in", however, see the   MTA option.

Note that there is a domain level analogue,.

See also:
 * Direct LDAP attribute name MTA options
 * aliasoptindetourhost Option
 * ldap_domain_attr_detourhostoptin MTA Option
 * aliasdetourhost_null_optin MTA Option