New documentation available at https://docs.openkm.com/kcenter/
Documentation at https://www.openkm.com/wiki is deprecated.
Don't use it unless you are running OpenKM v6.2 and older.
(Click the banner to close the warning)
Check mail utility is usefull to test mail configuration.
Fill form fields and finally click check button.
If all is right check will get back OK result.