To configure MS Exchange 2003, you need to do the following procedures, this article will walk you through the process and you will have a better understanding by the time you finish these instructions.
To Configure MS Exchange
To set up the Exchange server so it can take in mail for whatever organization you are setting up for, you need to first install the software from a CD. However, ensure you have NNTP support before commencing with the configurations.
Simply open the Exchange System Manager to begin configuring your new Exchange installation. First of all, add the internet domain name to the recipient policies by opening the Exchange System Manager so they can be accepted by the SMTP server. Remember, the SMTP only accepts mail from domains in the recipient policies. Thus for your company’s domain to be accepted, add it to the default policy by enlarging the Recipients tab accessing Recipient Policies. On the Default Policy, double click to open its properties and pick E-Mail Address. You should see the accepted listed mails. Now click on New tab to add an SMTP protocol by typing the domain name you will get mail from e.g firstname.lastname@example.org and check the box beside it and press OK. Next you will be given the Add New Address to all users tab, click to select it.
To Configure the SMTP Server for Inbound Mail,
You want the server to accept incoming mail, do the following;
Go to Servers/Protocols/SMTP/Default SMTP Virtual Server and locate settings for the SMTP, right click on Default SMTP Virtual Server and open properties. On General, leave it at default; on Access, click to Allow Anonymous Access in the Authentication box. Then choose Connection to connect to the SMTP sever, you can set it for individual or multiple IP addresses. Now all systems have access to the SMTP server. Go to the Relay tab and assign it if necessary and under Messages tab, limit the number of messages to be received per connection.
Configure the SMTP Server for Outbound Mail
To do this, right click on Connectors in the Exchange System Manager and pick New SMTP Connector. Under the General tab, make appropriate selections of what you want SMTP to do with sending mails. Do this on the DNS options accordingly. After that, add the Local bridgehead server option and on the Address Space, enter any wildcard address for the SMTP to allow emails to any domain. Under the authentication tab, fill in the User name and password from the Advanced tab on the SMTP connector and then choose Outbound Security. Now, simply choose Basic authentication and then select Modify to type user name and password.
You have just done it, successfully configured your Exchange Server to receive mails and to send mails to other domains. It can now send mails to the internet and receive SMTP email feed from any direct internet connection. The other remaining thing to do is to simply configure your users email addresses in the Active directory.