Please help I have publishing my exchange server using publishing wizard from ISA, after setup and DNS internal as the forwarder to my external dns I can send mail from client work station using outlook 2000 to any where to internet, but I can not receive mail from internet I keep getting this error <<<This is an automatically generated Delivery Status Notification. Unable to deliver message to the following recipients, because the message was forwarded more than the maximum allowed times. This could indicate a mail loop. >> Why it would be a mail loop is there some thing wrong in dns server but I have check DNS again could find any thing wrong. What I am doing wrong here? PS: I have firewall client running on my exchange server is that possible cause this problem? please help any one Thank you very much ..................................... mailto:fphan@xxxxxxxxxxx .....................................