restore sender alias, refs #20849

tester.py

@@ -347,7 +347,7 @@ class Tester():
                 log('No recipients defined for email sending. Set a value for EMAIL_ADMINS.')
                 return 1
             boundary = str(uuid.uuid4())
-            mail = '''From: noreply@ubicast.eu
+            mail = '''From: %(hostname)s <noreply@ubicast.eu>
 To: %(recipients)s
 Subject: %(hostname)s UbiCast MediaServer functional tests report: %(status)s
 Mime-Version: 1.0