The following article is part 6 of the mailserver set-up with virtual users and domains using Postfix and Dovecot series. It covers the steps used to set-up server-side email filtering with Dovecot Sieve and Roundcube on a CentOS 6 VPS
At the end of this article you will end up having the ability to set-up your own server-side mail filter rules and automatically deliver emails to specific maildir based on a filter rule.
What is all this about?
The project behind this is known as Pigeonhole. It’s great because it adds support for the Sieve language (RFC 5228) and the ManageSieve protocol (RFC 5804) to the Dovecot Secure IMAP Server. Additionally, one can easily manage these filter rules via Roundcube’s web interface.