The documentation in the services API for the setting "DeliveryDelay" for the function "SetRequestedServerSetting" within the "svcServerAdmin" API is incorrect. The documentation states the setting is configured in seconds. However, in the latest version of SmarterMail, the value must be passed in as milliseconds (I.E. submitting a value of 5000 sets the value to 5 seconds).
Either the documentation or the function needs updated so that the two agree.