[Dovecot] Procmail versus Dovecot LDA

[Kenneth Porter]

--On Thursday, August 07, 2008 3:37 PM -0400 Timo Sirainen <tss at iki.fi> 
wrote:

> If you used Dovecot's deliver, the deny passwd should have worked, but
> I've no idea about procmail.

I'll note that I'm using procmail because of the ability to filter and run 
SpamAssassin from it. Does the Dovecot LDA provide the equivalent? (I know 
there's Sieve, though haven't looked into how one uses it.) If so, how hard 
is it to migrate my procmailrc files?