Hi, Farhad!

Thanks a lot. It is working like a charm by now. 8-)

>
>1- Open IIS
>2- Right click on Default SMTP virtual server and select "properties"
>3- click on "Access" tab
>4- At the end of the opened page click on "Relay..." button
>5- Select "All except the list below" radio button and check that there is no entery in the list below of the radio button
>6- Click on the Check box below the ADD button to make it checked, the check box is following with this title "Allow all computers which successfuly autenticated ..."
>
>Hope you run it.
>Farhad