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-rw-r--r--Mailman/MailList.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/Mailman/MailList.py b/Mailman/MailList.py
index e07e23aa..b08b5973 100644
--- a/Mailman/MailList.py
+++ b/Mailman/MailList.py
@@ -470,6 +470,7 @@ class MailList(HTMLFormatter, Deliverer, ListAdmin,
#
def Create(self, name, admin, crypted_password,
langs=None, emailhost=None):
+ assert name == name.lower(), 'List name must be all lower case.'
if Utils.list_exists(name):
raise Errors.MMListAlreadyExistsError, name
# Validate what will be the list's posting address. If that's