If you are using Apache or Microsoft IIS to front your web server and want to use web services, you will also need to change your web services configuration file to allow it to serve the correct endpoints in the xMatters WSDL.
<xmHOME>\webserver\webapps\axis2\WEB-INF\conf\axis2.xml
file in a text editor.<parameter name="httpFrontendHostUrl">http://199.199.199.199/api</parameter>