Unable to find username

[blasphemite]

PassCore Server

• OS: Linux
• Provider: Active Directory
• Settings file (without sensitive information):

docker-compose.yml:

passcore:
        container_name: passcore
        ports:
            - 80:80
        env_file:
            - ./.env
        environment:
            - WebSettings__EnableHttpsRedirect=false
            - AppSettings__UseAutomaticContext=false
            - AppSettings__LdapHostnames__0=domain.example.com
            - AppSettings__LdapSecureSocketLayer=true
            - AppSettings__LdapPort=636
            - AppSettings__LdapUsername=passcore@domain.example.com
            - AppSettings__LdapIgnoreTlsErrors=true
            - AppSettings__LdapIgnoreTlsValidation=true
            - AppSettings__AllowADGroups__0=Password Web Reset
            - AppSettings__DefaultDomain=domain.example.com
            - ClientSettings__UseEmail=false
        image: passcore:latest

env file contains AppSettings__LdapPassword

• Log file (without sensitive information):

warn: PassCoreLDAPProvider[0]
      LDAP query: (sAMAccountName=testuser)
warn: PassCoreLDAPProvider[0]
      Unable to find username: [testuser]

Describe the bug
Double checking my configuration because I'm unable to get around "unable to find username" error. testuser user is a member of AD domain & group "Password Web Reset", passcore user has delegated password permissions.

Attempted UseEmail=false without DefaultDomain set and get the same error in logs. Also attempted same configuration but without AllowADGroups set; same error. Am I missing something? After combing through previous issues I was able to get through previous configuration errors, but not this one.

[blasphemite]

Bind user didn't have Read permissions for Users OU