[stunnel-users] Problem TLS connection Outlook 365

Hi, I'm trying to connect to Outlook 365 with this setup

[office365] client = yes accept = 127.0.0.1:993 connect = outlook.office365.com:993

unfortunately, when from my penthao software, I try to connect with email and password stunnel responds like this:

2023.09.01 09:57:33 LOG5[2]: Service [office365] accepted connection from 127.0.0.1:63027 2023.09.01 09:57:33 LOG5[2]: s_connect: connected 52.98.206.242:993 2023.09.01 09:57:33 LOG5[2]: Service [office365] connected remote server from 192.168.1.228:63028 2023.09.01 09:57:33 LOG5[2]: Connection closed: 258 byte(s) sent to TLS, 160 byte(s) sent to socket

could you help me? is it necessary to configure the certificates? How should it be done?

Thank you!