Trying to connect TrueNAS-Scale to NS8-AD, Letsencrypt fails to obtain certificate

The correct bind DN should be something like:

CN=ldapservice,CN=Users,DC=bogolinux,DC=net

or

CN=ldapservice,DC=bogolinux,DC=net

If nothing else works, It’s also possible to disable the need for strong auth but it’s not recommended because of the weak security:

Add the following to your /home/samba1/.local/share/containers/storage/volumes/config/_data/include.conf and restart the samba-dc service:

ldap server require strong auth = no

Is the TrueNAS Scale able to resolve the hostname of the DC correctly?

Maybe you can use an IP address as hostname in the LDAP settings?