hi i have one exchange server 2007, one edge transport server and one DC. I can send external e-mail , internal e-mail, receive internal e-mail but canot receive external e-mail. how to fix this problem thanks

usually this is related to two areas. routing/firewall and DNS. in yourcase, i suppose it could also be edgesync config as well. from the internet can you telnet to port 25 on your edge server? do the mx records for your domain point to the edge server? if mail is reaching the edge server, is it making it to the hub transport (the other one) server? http://technet.microsoft.com/en-us/library/bb851506(EXCHG.80).aspx

i can telnet port 25 and do the mx record but it a same cannot receive e-mail

Hi, In order to resolve the issue more efficiently, could you help us clarify the following questions? 1. Whats the NDR you received? 2. Have your check the queue status in edge server? Do any message stuck there? First, we need to know if the mails have been successfully received by the edge server. Thanks, Elvis