diff --git a/app/config.py b/app/config.py
index 1a462df1c..9d3a34671 100644
--- a/app/config.py
+++ b/app/config.py
@@ -81,6 +81,7 @@ class Config(object):
         r"hmcts\.net",
         r"scotent\.co\.uk",
         r"assembly\.wales",
+        r"cjsm\.net",
     ]
 
 
diff --git a/tests/app/main/test_validators.py b/tests/app/main/test_validators.py
index 4818a1ee8..1a77885a9 100644
--- a/tests/app/main/test_validators.py
+++ b/tests/app/main/test_validators.py
@@ -90,6 +90,7 @@ def _gen_mock_field(x):
     'test@hmcts.net',
     'test@scotent.co.uk',
     'test@assembly.wales',
+    'test@cjsm.net'
 ])
 def test_valid_list_of_white_list_email_domains(
     client,