rspamd/conf/modules.d/once_received.conf

# Please don't modify this file as your changes might be overwritten with
# the next update.
#
# You can modify '$LOCAL_CONFDIR/rspamd.conf.local.override' to redefine
# parameters defined on the top level
#
# You can modify '$LOCAL_CONFDIR/rspamd.conf.local' to add
# parameters defined on the top level
#
# For specific modules or configuration you can also modify
# '$LOCAL_CONFDIR/local.d/file.conf' - to add your options or rewrite defaults
# '$LOCAL_CONFDIR/override.d/file.conf' - to override the defaults
#
# See https://rspamd.com/doc/tutorials/writing_rules.html for details

once_received {
    good_host = "mail";
    bad_host = "static";
    bad_host = "dynamic";
    symbol_strict = "ONCE_RECEIVED_STRICT";
    symbol = "ONCE_RECEIVED";
    symbol_mx = "DIRECT_TO_MX";

    .include(try=true,priority=5) "${DBDIR}/dynamic/once_received.conf"
    .include(try=true,priority=1,duplicate=merge) "$LOCAL_CONFDIR/local.d/once_received.conf"
    .include(try=true,priority=10) "$LOCAL_CONFDIR/override.d/once_received.conf"
}