Yesterday I finished the setup of our new Exchange 2007 server - I redirected traffic form our Exchange 2003 and everything is working fine. My problem is - any internal software that sends local SMTP mail - for example Symantec Backup Exec - I'm not able to recieve mail from these applicaitons. Mail if flowing externally and we are able to send mail internally - so everything is working execpt the above. The only special configuration I did on the Exchange server was to only allow incoming mail from our remote spam server. Thanks for helping.