If your company is using windows authentication in the Saleslogix Web client then you will want to use Windows Authentication for your mobile clients. After setting up the Windows Authentication according to the instructions in the Admin help set up the SData portal with basic authentication and with windows authentication disabled. On a system without mobile customizations install the SLXMobile bundle 3.0.3 and build and deploy your system. Test your Sdata portal with the adapters test and test your mobile client login in IE by using the FQDN ie. domainusername. Once the url has tested send it out to your users and remind them to use the FQDN.