Hello guys , i'm newbie , i get this message when i send email , can i solve this problem? i send to gmail ,yahoo & hotmail , i get same message what is problem with my exhange 2007? help me guys Delivery has failed to these recipients or distribution lists: someone@gmail.comMicrosoft Exchange has been trying to deliver this message without success and has stopped trying. Please try sending this message again, or provide the following diagnostic text to your system administrator.

Are you only having problems sending to these domains? If you have problems with all external domains then you should check if your exchange server has the correct DNS server settings and it can resolve internet Domains And Check that your exchange server has access through the firewall on port 25 Deli

At last i found the problem from antivirus mcafee , after uninstall it ,everything is working back as it was