Index column size too large. The maximum column size is 767 bytes. about mailanalyzer HOT 6 CLOSED

MariaDB [(none)]> show global variables like 'innodb_lar%';
Empty set (0.001 sec)

MariaDB [(none)]> show global variables like 'innodb_fil%';
+-----------------------+-------+
| Variable_name         | Value |
+-----------------------+-------+
| innodb_file_per_table | ON    |
| innodb_fill_factor    | 100   |
+-----------------------+-------+
2 rows in set (0.001 sec)

MariaDB [(none)]> show global variables like 'innodb_default%';
+----------------------------------+---------+
| Variable_name                    | Value   |
+----------------------------------+---------+
| innodb_default_encryption_key_id | 1       |
| innodb_default_row_format        | compact |
+----------------------------------+---------+
2 rows in set (0.001 sec)

mysql> show global variables like 'innodb_lar%';
+---------------------+-------+
| Variable_name       | Value |
+---------------------+-------+
| innodb_large_prefix | ON    |
+---------------------+-------+
1 row in set (0.00 sec)

mysql> show global variables like 'innodb_fil%';
+--------------------------+-----------+
| Variable_name            | Value     |
+--------------------------+-----------+
| innodb_file_format       | Barracuda |
| innodb_file_format_check | ON        |
| innodb_file_format_max   | Barracuda |
| innodb_file_per_table    | ON        |
| innodb_fill_factor       | 100       |
+--------------------------+-----------+
5 rows in set (0.00 sec)

mysql> show global variables like 'innodb_default%';
+---------------------------+---------+
| Variable_name             | Value   |
+---------------------------+---------+
| innodb_default_row_format | compact |
+---------------------------+---------+
1 row in set (0.00 sec)