@Danilo_Lima
Thank you for your quick answer!
Let me explained you what happened
One of my customer decide to change the theme of his program, so he simply went in the settings apps, change the theme and save.
A few hour later he call me panicking that is program doesn’t send email anymore, that he verify with his IT guy and that there were no change in their setup and don’t think that there were change on the Microsoft side (Outlook365).
So I start to investigate to find out that the SMTP password has been erase, he told me that he didn’t go in the SMTP page and that the only thing he has done was to change the default theme.
This is why I consider this a bug, the password shouldn’t be erase because a setting was modified. It should only be overwrite if the field has been fill up.
Best regards!