Send failed : SMTP

SYSTEM INFORMATION
OS type and version Ubuntu Linux 20.04.5
Webmin version Webmin 2.000

Mail server:
Sent via: smtp.office365.com
SMTP login: email@outlook.com
SMTP authentication: Login
SSL: STARTTLS
Meth: Login
POR: 587

I can’t send email from Outlook, I’ve already reviewed the smtp configuration and the active feature is on the server

falhou : 503 5.5.2 Send hello first [AM0PR06CA0085eurprd06prodoutlookcom]