There was apparently a regression in Ubuntu 15.10 since I started experiencing exactly the same problem with dovecot server failing to start on system boot after upgrading my computer to release 15.10 (from 15.04):
$ sudo systemctl status dovecot.service ● dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/lib/systemd/system/dovecot.service; enabled; vendor preset: enabled) Active: failed (Result: exit-code) since Mon 2015-11-09 12:15:21 EST; 4min 21s ago Process: 798 ExecStart=/usr/sbin/dovecot -F (code=exited, status=89) Main PID: 798 (code=exited, status=89) Nov 09 12:15:21 dovecot[798]: master: Error: service(imap-login): listen(192.168.1.100, 143) failed: Cannot assign...address Nov 09 12:15:21 dovecot[798]: master: Error: bind(192.168.1.100, 993) failed: Cannot assign requested address Nov 09 12:15:21 dovecot[798]: master: Error: service(imap-login): listen(192.168.1.100, 993) failed: Cannot assign...address Nov 09 12:15:21 dovecot[798]: Error: service(imap-login): listen(192.168.1.100, 143) failed: Cannot assign requested address Nov 09 12:15:21 dovecot[798]: Error: bind(192.168.1.100, 993) failed: Cannot assign requested address Nov 09 12:15:21 dovecot[798]: Error: service(imap-login): listen(192.168.1.100, 993) failed: Cannot assign requested address Nov 09 12:15:21 dovecot[798]: Fatal: Failed to start listeners Nov 09 12:15:21 systemd[1]: dovecot.service: Main process exited, code=exited, status=89/n/a Nov 09 12:15:21 systemd[1]: dovecot.service: Unit entered failed state. Nov 09 12:15:21 systemd[1]: dovecot.service: Failed with result 'exit-code'. The network interface is configured dynamically by the DHCP server on the router. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in Ubuntu. https://bugs.launchpad.net/bugs/700741 Title: dovecot won't start during boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dovecot/+bug/700741/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
