When a mail client connects to a mail server to receive or send mail, authentication is used for security purposes. There are different authentication methods. One of the options could be CRAM-MD5 or APOP, which are currently outdated and insecure. Here's how to check your current settings and set up a more modern and secure authentication method.
To correctly configure authentication in The Bat !, do the following:
If everything is configured exactly as described above, but in log of authorizations when sending, the old authentication method is still mentioned, then there is nothing to worry about - The Bat! when sending, it automatically selects the most appropriate method supported by the server, and after the CRAM-MD5 support is disabled, it will have to continue its work as usual.