I tried all the variations but it doesn't work.

Can someone who can use office 365 mail settings help me?

Regards.

It worked when I made the settings as follows, I am sharing it for reference.

Regards.

-------------------------------------

Email delivery method : smtp

SMTP server : smtp.office365.com

SMTP port : 587

SMTP HELO domain : mydomain.com

SMTP authentication  : login

SMTP username : myemail address

SMTP password : my app password (you should create an app password from 365 user settings)

Automatically use STARTTLS if available : checked

use ssl : no

--------------------------------------