Rspamd Ratelimit doesn't work

I have set up my rspamd and redis server but the ratelimit doesn't work. The Rspamd speaks to Postfix and my log file doesnt show anything unusual. Even GTUBE works --> So, the spam protection works because rspamd won't accept e-mails with the following content: XJS*C4JDBQADN1.NSBN3*2IDNEN*GTUBE-STANDARD-ANTI-UBE-TEST-EMAIL*C.34X The ratelimit file is stored in /etc/rspamd/local.d/ratelimit.conf and its actually the configuration, which rspamd provides --> https://rspamd.com/doc/modules/ratelimit.html # local.d/ratelimit.conf servers="127.0.0.1"; rates { # Selector based ratelimit some_limit = { selector = 'user.lower'; # You can define more than one bucket, however, you need to use array syntax only bucket = [ { burst = 1; rate = "1 / 1min"; } ] } } The rspamd-log shows the following lines: 2022-01-02 11:04:26 #64526(main) ; lua; ratelimit.lua:767: enabled ratelimit: some_limit [1 msgs burst, 0.016666666666667 msgs/sec rate] 2022-01-02 11:04:26 #64526(main) ; cfg; rspamd_init_lua_filters: init lua module ratelimit The command "rspamadm configtest" says --> syntax OK I've added the following lines into the main.cf: milter_protocol = 6 milter_mail_macros = i {mail_addr} {client_addr} {client_name} {auth_authen} milter_default_action = accept smtpd_milters = inet:127.0.0.1:11332 non_smtpd_milters = inet:127.0.0.1:11332 However, if i open the redis-cli and search for keys, no keys are stored regarding the redis chache. I've set up the redis configuration as well and i used the following tutorial: https://linuxize.com/post/install-and-integrate-rspamd/ Thank you for your help in advance