No problem.
The LDAP issue is persistent through migrations. It is still the same as in LDAP Configuration "Counting entries. This may take a while" never ends that was never solved. Now we migrated from Debian to CentOS and have the exactly same problem.
LDAP config works 100% fine with the exactly same settings with a freshly installed Zammad (CentOS). Therefore I don’t think we hit any limits on the LDAP side. Zammad has been restarted several times and even updated once.
There are no LDAP related “WARN” or “ERROR” entries in production.log during the “Counting entries”