I can't configuring the security of my Exchange 2000 SMTP connector, using the option tab of delivery retriction in Exchange System Manager. I select the reject option and push a universal group within the windows "Accept messages form". This solution do not work properly and all user can send mails trougth this conncetor.
I have applied the solution published in the Microsoft Technical Pages, article KB279813 and KB277872 but the problem persist.
Thank you for your attention