It's dccm a better implementation rater than dccproc for those who are using Sendmail? And if this is yes, how do I need to configure SA to work with dccm? I couldn't find anything about dccm and SA.
You can't configure SA to use dccm, because dccm is a milter, and is intended to be called directly by sendmail, not by another milter such as milter-spamc.
However, SA does support two interfaces to dcc.
If dccifd is running and the socket is available, SA will use that. This is the faster method, but it only gets used if dccifd is running.
Otherwise, SA will spawn dccproc, slower.
There's no extra configuration to SA needed at all, SA automatically detects the presence of either tool and uses the fastest one. All you need to do is start dccifd and SA will find it.
If you want to check what method SA is using, run spamassassin --lint -D.
