Thunderbird autoconfig

Based on thunderbird docs, current nginx config need modified as :
server {
listen 80;
listen [::]:80;

    root /tmp/invalid-path-nothing-here;

    # Improve privacy: Hide version an OS information on
    # error pages and in the "Server" HTTP-Header.
    server_tokens off;

    location = /mail/config-v1.1.xml {
            alias /var/lib/mailinabox/mozilla-autoconfig.xml;

    # Redirect using the 'return' directive and the built-in
    # variable '$request_uri' to avoid any capturing, matching
    # or evaluation of regular expressions.
    #return 301$request_uri;


But failed to do so as it always redirect into 443/https, can you please add proper thunderbird autoconfig?, it needs to be on port 80 not 443.

I’m using Thunderbird 31.6.0 and it seems to be working fine for me. Could the problem be something else?

After restarting chrome, the new updated nginx config managed to run (above config), vanilla unedited seems failed to do autoconfig.