Configuring Domain in Links

Becky Cartine <[email protected]>
Newsgroups gmane.comp.java.roller.user
Message-ID <[email protected]> 
I would like to know how to configure roller so that all links have the domain name of the site instead of the IP address.
For example, if the site is www.my-example.com, 
the home page of the blog has a post with a link "Read More",
but the URL of the link has "xx.xxx.xx.xxx/roller/.." instead of "my-example.com/roller/.."

System Information below:

Apache Roller Weblogger Version 4.0.1
Tomcat 7
Linux OS
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