Confriguration webmail to outlook

Send test e-mail message: Your server does not support the connection encryption type you have specified. Try changing the encryption method. Contact your mail server administrator or Internet service provider (ISP) for additional assistance.
please help me

You could try changing the encryption. From SSL/TLS to STARTTLS or vice versa. However that’s not a Cloudflare related issue and you should check out StackOverflow, Serverfault or similar.