Hi all, Sometimes users in my company send mail but the recepient don't receive it. I use Message Tracking Center and I know that the message was submitted to advanced queing but not delivered to recepient Any setting need change on the server ? We used Exchange 2k on Win2k SP4 _________________________________________ Dinh Xuan Ngoc Administrator www.huesp.com.vn <http://www.huesp.com.vn/>