diff --git a/etc/default_data.json b/etc/default_data.json
index 3884a641c..19036d5be 100644
--- a/etc/default_data.json
+++ b/etc/default_data.json
@@ -30082,7 +30082,6 @@
         "https://lists.opnfv.org/pipermail/fds-dev/",
         "https://lists.opnfv.org/pipermail/infra-wg/",
         "https://lists.opnfv.org/pipermail/mano-wg/",
-        "https://lists.opnfv.org/pipermail/odl-wg/",
         "https://lists.opnfv.org/pipermail/openstack-dev/",
         "https://lists.opnfv.org/pipermail/opnfv-enduser-advisory-group/",
         "https://lists.opnfv.org/pipermail/opnfv-project-leads/",
diff --git a/stackalytics/processor/mls.py b/stackalytics/processor/mls.py
index b05be3dcc..54d13e432 100644
--- a/stackalytics/processor/mls.py
+++ b/stackalytics/processor/mls.py
@@ -54,6 +54,10 @@ TRAILING_RECORD = ('From ishakhat at mirantis.com  Tue Sep 17 07:30:43 2013\n'
 
 def _get_mail_archive_links(uri):
     content = utils.read_uri(uri)
+    if not content:
+        LOG.warning('Mail archive list is not found at %s', uri)
+        return []
+
     links = set(re.findall(r'\shref\s*=\s*[\'"]([^\'"]*\.txt\.gz)', content,
                            flags=re.IGNORECASE))
     return [parse.urljoin(uri, link) for link in links]