Hi, I'm planning on upgrading some of our mailing lists from Mailman 2 to Mailman 3. I setup a test server to try Mailman 3.

I notice that when I go to "Archives" in the web interface and choose "Start a new thread" or "Reply" to post a message on my test list, it says successful, but the message never shows up.

Looking at the logs, I don't see any errors. I can see the HTTP POST in the log and it seems like everything works: [pid: 70249|app: 0|req: 41/93] 127.0.0.1 () {46 vars in 1223 bytes} [Tue Nov 1 21:03:25 2022] POST /archives/list/discuss@lists.chicagohpc.org/message/ATXUU5VT NBT6TIF72T7WNNHDIJNOROIF/reply => generated 949 bytes in 104 msecs (HTTP/1.0 200) 8 headers in 258 bytes (1 switches on core 1)

I'm using nginx as the http server. location / { proxy_pass http://127.0.0.1:8000; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $remote_addr; } location /static/ { alias /opt/mailman/web/static/; autoindex off; }

Does anyone have an idea of why posting messages from the web interface never shows up? I turned on all the debug logs but can't find an error.

Thanks