i am using zentyal 4.2.12. from last some days my server getting authentication issue and after forcefully restart working some time.
error massage-Crash report found! Click the button if you want to send the following files anonymously to help fixing the issue: /var/crash/_usr_sbin_samba*. Although Zentyal will make a good use of this information, please review the files if you want to be sure they do not contain any sensible information.