Comment 6 for bug 700741

I've tried your suggestion, but that doesn't seem to help.
Dovecot is not started during boot and I see the same "failed: Cannot assign requested address" messages in mail.log

I've pasted part of the /etc/init/dovecot.conf

# dovecot - pop3/imap mail server
#
# Dovecot is a mail server whose major goals are security and extreme reliabilit
y.

description "dovecot - pop3/imap mail server"

#start on started rc-sysinit
start on (started rc-sysinit and net-device-up IFACE=eth0)
stop on runlevel [!2345]

pre-start script
    test -x /usr/sbin/dovecot || { stop ; exit 0; }
    test -r /etc/dovecot/dovecot.conf || { stop ; exit 0; }

<snip>