rspamd configuration is broken, apparently

[Russell L. Carter]

Greetings,

rspamd novice here, but right from the beginning postfix +
spamassassin + all those other things for 25 years.

12-stable, completely current /usr/ports/mail/rspamd install

I've been through the source code of rspamd, and worn out google,
and I am completely defeated by the default ports rspamd install
producing this very very basic error:

root at h2> rspamadm configdump -m
2020-04-17 21:02:46 #0(main) <kfh9r9>; cfg; rspamd_init_filters: 
requested unknown module spf
2020-04-17 21:02:46 #0(main) <kfh9r9>; cfg; rspamd_init_filters: 
requested unknown module arc
2020-04-17 21:02:46 #0(main) <kfh9r9>; lua; arc.lua:34: cannot enable 
arc plugin: dkim is disabled

Any ideas, pointers, better google search strings, very much
appreciated.

I suppose I could add the contents of /usr/local/share/rspamd/plugins,
mention that I tried various possibilities of merge/override in
~/local.d etc. etc.

Many thanks,
Russell