diff --git a/tests/test_config.py b/tests/test_config.py
index d0d8e75..db884c8 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -24,7 +24,7 @@ def test_get(init_config):
     assert config.get(ConfigParameter.HTTP_HOST) == ""
     assert config.get(ConfigParameter.HTTP_PORT) == str(EXPECTED_HTTP_PORT)
     assert config.get_int(ConfigParameter.HTTP_PORT) == EXPECTED_HTTP_PORT
-    with pytest.raises(AssertionError):    
+    with pytest.raises(AssertionError):
         config.get_bool(ConfigParameter.DB_SQLITE_FILE)
 
 def test_put(init_config):
diff --git a/tests/test_db.py b/tests/test_db.py
index 1f390c3..649c5e7 100644
--- a/tests/test_db.py
+++ b/tests/test_db.py
@@ -11,7 +11,6 @@ def setup_db():
     database.setup(":memory:")    
 
 
-
 def test_dao_published(setup_db):
 
     # test count published
@@ -52,4 +51,3 @@ def test_dao_notified(setup_db):
     dao.notify_comment(c3)
     assert 0 == len(dao.find_not_notified_comments())
 
-
diff --git a/tests/test_mail.py b/tests/test_mail.py
new file mode 100644
index 0000000..192c3cc
--- /dev/null
+++ b/tests/test_mail.py
@@ -0,0 +1,11 @@
+#!/usr/bin/python
+# -*- coding: UTF-8 -*-
+
+import pytest
+from stacosys.service import mailer
+
+def test_configure_and_check():
+	mailer.configure_smtp("localhost", 2525, "admin", "admin")
+	mailer.configure_destination("admin@mydomain.com")
+	with pytest.raises(ConnectionRefusedError):
+		mailer.check()
\ No newline at end of file