E-Mail Delivery Status (SOST / SMTP / ECC 6.0 / Exchange 2010)

Hi,

I have a question.

When I send a mail from SAP I get a green "delivered" symbol in transaction SOST.

But when I send a mail to a not existing mail address I get a "Not delivered message" to outlook from Exchange Server but Status in SOST is also green!

Is it possible to change configuration that I get the exchange message and a red delivered symbol?

Thanks.