Hi Jakub,
I understand that cache_first=true is set in the [nss] section of
/etc/sssd/sssd.conf but what about the negative cache setting you are
referring to ? Could you please give an example ?
Looking at
https://jhrozek.fedorapeople.org/sssd/1.16.2/man/sssd.conf.5.html
, there's a few settings referring to "negative cache".
Thanks
Alex