We have an IDM Server on a Rocky Linux distro configured with a Trust to a Samba AD DC (also installed on a Rocky Linux).
So we created a user 'usupru2' on Samba AD DC under adtest.uy domain.
Then we enroll an Ubuntu 20.04 client to IDM and when we try to login with 'usupru2@adtest.uy' it fails with the message below:
Dec 2 18:05:30 prueba gdm-password]: pam_unix(gdm-password:auth): authentication failure; logname= uid=0 euid=0 tty=/dev/tty1 ruser= rhost=
Dec 2 18:05:30 prueba gdm-password]: pam_sss(gdm-password:auth): authentication failure; logname= uid=0 euid=0 tty=/dev/tty1 ruser= rhost= user=usupru2@ADTEST.UY
Dec 2 18:05:30 prueba gdm-password]: pam_sss(gdm-password:auth): received for user usupru2@ADTEST.UY: 10 (User not known to the underlying authentication module)
Executing id usupru2@adtest.uy does not work, but kinit does.
On IDM server login with usupru2@adtest.uy works.
Any help is appreciated.