External LDAP servers?
If you're using an external LDAP server, what product are you using? So far I'm only familiar with OpenLDAP but I've had a hard time getting it working with StarTLS and the RFC2307BIS schema.
@YurkshireLad We don't use an external LDAP server ourselves but our customers use Active Directory or Okta often.
OpenLDAP should work well with Cloudron's integration though.