[Xymon] How to make link in alert message show hostname instead of "localhost"?

When my Xymon instance generated alert emails, the link at the bottom links like this:

"See http://localhost/xymon-cgi/svcstatus.sh?HOST=choicevoip&SERVICE=conn <http://localhost/xymon-cgi/svcstatus.sh?HOST=choicevoip&SERVICE=conn>?

Can anyone tell me how to have these links get generated to use the actual hostname instead of localhost?

Thanks!

Jeff