[CentOS] Setting up dovecot under CentOS-6.4

I want to set up dovecot on a CentOS server.
I did this before, some time ago,
but it seems to have become much more complicated,
involving postfix, amavisd-new and clamav (for spamassassin).

What puzzles me is the role, if any, of procmail and .procmailrc
in this new system.
Is procmail no longer used/needed?



-- 
Timothy Murphy  
e-mail: gayleard /at/ eircom.net
tel: +353-86-2336090, +353-1-2842366
s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland