I installed cyrus-imapd and cyrus-admin via apt-get install. When I try to start the service with /etc/init.d/cyrus-imapd start, I got [ ok ] Starting cyrus-imapd (via systemctl): cyrus-imapd.service. as the response but there is no process running. In /var/log/mail.err I got the following message:
cyrus/tls_prune[8761]: DBERROR: opening /var/lib/cyrus/tls_sessions.db: cyrusdb error
cyrus/master[8721]: process type:START name:tlsprune path:/usr/sbin/cyrus age:0.000s pid:8761 exited, status 1
cyrus/master[8721]: can't run startup
I don't know what went wrong. The file /var/lib/cyrus/tls_sessions.db doesn't exists.
Any suggestions?