On Mon, Sep 12, 2016 at 11:09:05AM +1000, Lachlan Musicman wrote: > (Fri Sep 9 20:41:13 2016) [sssd[nss]] [sbus_client_init] (0x0020): > check_file failed for [/var/lib/sss/pipes/private/ > sbus-dp_unix.petermac.org.au]. It looks like the domain process died and never recovered. What is in /var/log/sssd/sssd_unix.petermac.org.au.log ?