conn, err := l.LDAP.Connect()
	if err != nil {
		return "", nil, err
	}
	defer conn.Close()

	// Bind to the lookup user account
	if err = l.LDAP.LookupBind(conn); err != nil {
		return "", nil, err
	}

	// Lookup user DN
	bindDN, err := l.LDAP.LookupUserDN(conn, username)
	if err != nil {
		errRet := fmt.Errorf("Unable to find user DN: %w", err)
		return "", nil, errRet
	}

	var ldapOpts []cr.LDAPIdentityOpt
	if sessionPolicyFile != "" {
		var policy string
		if f, err := os.Open(sessionPolicyFile); err != nil {
			log.Fatalf("Unable to open session policy file: %v", sessionPolicyFile, err)
		} else {
			bs, err := io.ReadAll(f)
			if err != nil {
				log.Fatalf("Error reading session policy file: %v", err)
			}
			policy = string(bs)
		}
		ldapOpts = append(ldapOpts, cr.LDAPIdentityPolicyOpt(policy))