[Rspamd-Users] Error adding custom rules (SENDER_DOMAIN_BLACKLIST)

[Andreas]

Hello everyone,

I'm trying to block unwanted domains and have made this entry in my 
/etc/rspamd/local.d/multimap.conf

SENDER_DOMAIN_BLACKLIST {
    type = "smtp_from";
    filter = "email:domain";
    map = "${LOCAL_CONFDIR}/local.d/maps.d/sender_domain_blacklist.map";
    action = "reject";
    prefilter = true;
    priority = 100;
    messages = "This sender domain is blocked!";
    symbol = "BLACKLISTED_DOMAIN";
}


and the map file exists with valid line breaks:

cat -A /etc/rspamd/local.d/maps.d/sender_domain_blacklist.map

...tagroup.online.tc$
inkilsane.de$
tiimab.or.mg$
toonaca.or.mg$
agentur.de$
...

But when I test the multimap I get this error message.
rspamadm configdump multimap
cannot add rule: "SENDER_DOMAIN_BLACKLIST"
redefining fallback backend from /etc/rspamd/maps.d/surbl-whitelist.inc to /
etc/rspamd/maps.d/surbl-whitelist.inc

All other rules are accepted. Does anyone see why this isn't working?

Best regards

Andreas