code: public void setProxypassword(String proxypassword) throws ApplicationException {
  	try {
  	    smtp.getProxyData().setPassword(proxypassword);
  	}
  	catch (Exception e) {
  	    throw new ApplicationException("attribute [proxypassword] of the tag [mail] is invalid", e.getMessage());
  	}
      }
docs: set the value password When required by a proxy server, a valid password.
  
  @param proxypassword value to set
  @throws ApplicationException