Obviously, the problem is serverside, not your code.

If you can't browse to http://10.37.4.2/mDirectalpha/mDirec...ggregator.asmx, then you need to fix that web application. Log on to 10.37.4.2, go to IIS, have a look at the web service setup there. Redeploy the ASMX and its corresponding files if you need to. Try browsing to http://10.37.4.2/mDirectalpha/mDirec...ggregator.asmx from the 10.37.4.2 machine itself.