Need to check for a specific output of a webpage

How does that output present itself? Redirect header? Payload?

To start, let's test from the command line with cURL:

curl -v http://XYZLM01:8080/arsys/servlet/LoginServlet?goto=http://XYZLM01:8080/arsys/forms/remXYZapp/SHR%3ALandingConsole/Default+Administrator+View/?format=html&server=remXYZapp&username=XUSER&pwd=XUSER

You may need to either modify the host name to use the IP address of the pool member, or add a local Hosts entry. If the above produces a response, you should see all of it at the command line. From that response, look for where (and if) your required output string exists.