[SAtalk] Using SPAMD ?

[Chris]

Quick question.   I have the usual line in my .procmailrc file of   :0fw: spamassassin.lock * < 256000 | spamassassin Which I *think* calls spamc? I don't have spamd running on my system and SA is working so I assume it's either calling spamc or on demand calling spamd.   Can anyone clarify what the above line is doing with regard to spamc or spamd and also help me change the configuration to use spamd by default?   Chris