diff --git a/tester.py b/tester.py
index 4026e1c6467413db842fa95127a89d3c216bac9d..40e0eff91fc6180ec8d190b503765f968fb2e0f0 100755
--- a/tester.py
+++ b/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