The user smith on server1 is trying to switch to the root account by using the su command and it fails. The contents of the /etc/pam.d/su file are shown below: [smith@server1 ~]# cat /etc/pam.d/su…

The user smith on server1 is trying to switch to the root account by using the su command and it fails. The contents of the /etc/pam.d/su file are shown below: [smith@server1 ~]# cat /etc/pam.d/su #%PAM-1.0 auth sufficient /lib/security/$ISA/pam_rootok.so auth required /lib/security/$ISA pam_wheel.so use_uid auth required /lib/security/$ISA/pam_stack.so service=system-auth account required /lib/security/$ISA/pam_stack.so service=system-auth password required /lib/security/$ISA/pam_stack.so service=system-auth session required /lib/security/$ISA/pam_selinux.so close session required /lib/security/$ISA/pam_stack.so service=system-auth session required /lib/security/$ISA/pam_selinux.so open session optional /lib/security/$ISA/pam_xuath.so As a Linux administrator, what would you suggest to solve this problem?