[Dovecot] Dovecot not processing through Sieve

[Stephan Bosch]

On 10/13/2011 3:00 PM, Steven Kiehl wrote:
> I'm fairly new to Dovecot, but I've gotten the majority of things working
> except for Sieve.  I'm running Dovecot 1.2.9 coupled with Postfix and
> SpamAssassin all with a virtual domains setup.  I am receiving mail and it
> is being processed by all the plugins that operate through Postfix.  The
> quota configured in Dovecot appears to be working because my mail client
> shows the configured quota.  But the Sieve rules are not processing.  I
> created a rule as follows to filter spam:
[...]
> Like I said, I am receiving emails to my domains without any problem, but
> sieve rules are not being processed.  I can see the rules set up by using
> the Roundcube plugin, and I can create and edit rules through Roundcube, but
> nothing different happens when I send myself an email.  It all just delivers
> to the inbox.

Are you sure you are using the Dovecot LDA (deliver)? Did you follow 
these instructions in the wiki?

http://wiki1.dovecot.org/LDA
http://wiki1.dovecot.org/LDA/Postfix

 From the looks of things, your Postfix currently still does its own 
mail delivery instead of using the Dovecot LDA. You should see entries 
in your log relating to LDA/deliver and Sieve, especially since you 
enabled mail_debug. To test whether Sieve is configured correctly (and 
to see what the Dovecot LDA normally logs), you can also manually 
execute /usr/lib/dovecot/deliver and feed it a message.

Regards,

Stephan