Rspamd or other such programs

[Peter Fraser]

Using  clamsmtpd  and the instructions in

http://technoquarter.blogspot.ca/2015/02/openbsd-mail-server-part-3-clamav-an
d.html

I was able to smtpd to interface with clamd.

Is there a similar procedure to get rspamd or similar to work with smtpd?