Univention integrated Dovecot as new default IMAP/POP3 mail server in UCS. This article gives a first overview about this integration.
Why Dovecot as default IMAP/POP3 server in UCS?
Dovecot has a focus on security, stability and performance, while complying with established standards. Similarly to Postfix Dovecot starts a couple of separate processes for different tasks. The processes can be run with different owner and group permissions to limit the impact of a security incident.
Dovecot supports several backend storage formats: mbox, Maildir and dbox. In each case it uses indices to increase access performance. Their self healing and self optimizing features reduce tedious administrative intervention and simplify backups.