On Feb 21, 2012 7:03 AM, "Grant Edwards" <grant.b.edwards@gmail.com> wrote:
>
> On 2012-02-20, Grant Edwards <grant.b.edwards@gmail.com> wrote:
> > I'm looking to set up something that reads messages from one IMAP
> > server/mailbox, filters out the spam, and then writes the filtered
> > messages into another IMAP server/mailbox. The source and destination
> > servers may or may not be the same, and neither is the machine where
> > the filter is running. I'd like the solution to use the IMAP IDLE
> > command to avoid the latency and load of constantly setting up SSL
> > connections and polling the source server.
> >
> > It looks like fetchmail -> procmail+spamassassin -> dovecot/deliver
> > ought to do what I want.
>
> Or not.  It looks dovecot can't deliver to a mailbox on an IMAP server
> after all.
>
> > Is there something simpler and easier that I've overlooked?
>

Seems to me "getmail" is more suitable for your needs:

http://pyropus.ca/software/getmail/documentation.html#features

the feature list says that it can run a filtering software, and delivers
emails directly into maildirs.

Not sure about IDLE support though.

Rgds,