revert sender to support@ubicast.eu

tester.py

@@ -483,7 +483,7 @@ class Tester:
                 log(consecutive_msg)
                 html_report += "\n<br/>" + consecutive_msg.replace("\n", "\n<br/>")
         if send_email:
-            sender = utils.get_conf("EMAIL_SENDER", "root@%s" % hostname)
+            sender = "support@ubicast.eu"
             recipients = utils.get_conf("EMAIL_ADMINS") or ""
             system_domain = utils.get_conf("MS_SERVER_NAME")
             system_type = "MediaServer"