deal all, we are recently deploying exchange 2007. i have tested Exchange server 2007 which is great to deal and i am successfully deploy internal ,means internal all services including ,pop3,IMAP4,owa and even back up(.pst) are working. but my real problem is mail sending to outsides i have hub transport rule also and i also make send conector using DNS "MX" record to route the mails but i am not succeded yet. My only issue to send mail to outsides please help me to sort this issues. i feel pleasure if some one help me with snap shots .

What NDR you are getting back? Have you configured MX and Reverse DNS record for your email incoming gateway and it shouldn't be dynamic IP, it requires static public IP because most of recipient email server will check all reverse DNS settings to make sure that email is not coming from spam. You can verify your settings as per below article on your Hub transport server. How to Configure Internet Mail Flow Directly Through a Hub Transport Server http://technet.microsoft.com/en-us/library/bb738138.aspx Amit Tank | MVP - Exchange | MCITP:EMA MCSA:M | http://ExchangeShare.WordPress.com

Hello Zeeshan, In order to send emails out onto theInternet you need to configure a Send connector. A nice tutorial with screenshots can be found at Daniel Petri's blog here: http://www.petri.co.il/configuring-exchange-2007-send-external-email.htm Ook