HI, Recently I have installed exchange server 2003 for testing, I unable to send / receive mails from externally, i don't have any MX, records. pls provide step by step configuration. Thanks & Regards ANIL

Hi Anil, You need to configure MX record in public DNS (which may be with your ISP) depending on your network topology. Below guide will help you to configure and test it. How do I configure and test the MX Record for my Internet Domain name?http://www.petri.co.il/configure_mx_records_for_incoming_smtp_email_traffic.htm