Yes it is exclusively about maven build with respect to the RAD ,
for testing i configured the maven with eclipse using m2eclipse , when i am trying to build i am getting the same error,
how to check the proxy settings and what exactly is the problem i am not understanding as you are experts i need a suggestions
how to fix this problem i am not able run any maven commands, please let me know if you have suggestions.
Did you look at the link I gave you for setting up the proxy? The m2eclipse plugin uses the settings.xml file you set up for Maven, so getting it working which mvn on the command line should also get it working for inside RAD.