mailcow/src/mailcow-dockerized/data/conf/rspamd/local.d/mx_check.conf

timeout = 8.0;
symbol_bad_mx = "MX_INVALID";
symbol_no_mx = "MX_MISSING";
symbol_good_mx = "MX_GOOD";
expire = 86400;
key_prefix = "rmx";
enabled = true;