diff --git a/inventory/group_vars/mailman_stg b/inventory/group_vars/mailman_stg
index 16bde157b6..dadc76de33 100644
--- a/inventory/group_vars/mailman_stg
+++ b/inventory/group_vars/mailman_stg
@@ -45,6 +45,9 @@ mailman_login:
   twitter:
     display_name: Twitter
     provider: twitter
+  fedora:
+    display_name: Fedora
+    provider: fedora
 mem_size: 4096
 nrpe_check_postfix_queue_crit: 50
 # by default, the number of emails in queue before we whine
diff --git a/roles/mailman3/tasks/main.yml b/roles/mailman3/tasks/main.yml
index 34040202b7..b6de3200a2 100644
--- a/roles/mailman3/tasks/main.yml
+++ b/roles/mailman3/tasks/main.yml
@@ -208,6 +208,27 @@
     - mailman
     - hyperkitty
 
+- name: Copy the initial user fixture
+  ansible.builtin.template:
+    src: initial-data.json.j2
+    dest: "{{ mailman_webui_confdir }}/initial-data.json"
+    owner: root
+    group: root
+    mode: 0640
+  tags:
+    - mailman
+    - hyperkitty
+
+- name: Initialize authentication providers
+  ansible.builtin.command:
+    cmd: mailman-web loaddata "{{ mailman_webui_confdir }}/initial-data.json"
+    chdir: /etc/mailman3
+  become_user: mailman
+  become: true
+  tags:
+    - mailman
+    - hyperkitty
+
 # Add the Nest banner
 # See issue https://pagure.io/fedora-infrastructure/issue/10103
 - name: Replace the top.html template in hyperkitty/postorius to change banner
diff --git a/roles/mailman3/templates/initial-data.json.j2 b/roles/mailman3/templates/initial-data.json.j2
new file mode 100644
index 0000000000..d17e0d79ad
--- /dev/null
+++ b/roles/mailman3/templates/initial-data.json.j2
@@ -0,0 +1,30 @@
+[
+{% for host in mailman_domains %}
+{
+    "fields": {
+        "domain": "{{ host }}",
+        "name": "Fedora mailing-lists"
+    },
+    "model": "sites.site",
+    "pk": {{ loop.index }}
+},
+{% endfor %}
+{% for service_name, service_data in mailman_login.items() %}
+{
+    "fields": {
+        "name": "{{ service_data.display_name }}",
+        "sites": [
+            {% for host in mailman_domains %}
+            {{ loop.index }}{% if not loop.last %},{% endif %}
+            {% endfor %}
+        ],
+        "client_id": "{{ mailman_login_secrets[env][service_name].client_id }}",
+        "secret": "{{ mailman_login_secrets[env][service_name].secret }}",
+        "key": "",
+        "provider": "{{ service_data.provider }}"
+    },
+    "model": "socialaccount.socialapp",
+    "pk": {{ loop.index }}
+}{% if not loop.last %},{% endif %}
+{% endfor %}
+]