535: 5.7.3 Authentication unsuccessful

Hi Maria , 

Did you manage to fix this? I am having very similar issues (also using godaddy ..) 

Thanks

I also had to log in to https://outlook.office365.com/ and update my password.

Updated it in the application and it worked!

When I try to configure the new email account on Odoo system I got this error , connection test failed here is what we got instead 5.7.3 authentication unsuccessful AM3PR07CA0129.eurprd07.prod.outlook.com  

Also yesterday one of the Microsoft support team made a remote session to help fix the error      conection test failed here is what we got instead 535 5.7.139 authentication unsuccessful , smtpclintauthentication is disabled for tenant visit https://aka.ms/smtp_auth_Pdisabled for more information [BLAPR03CA0085.namprd03.prod.outlook.com]        but  it did not work 

Kindly help

u can try turn off AZURE certification. i did it and it works. 

Also u need to go to Microsoft 365 admin center

Hello,

I have an issue when using an O365 account and sending emails from an application.

The application has been suitable to use tls/starttls, port 587, ect.

When entering an email account and password, the following message occurs:

"535: 5.7.3 Authentication unsuccessful"

I would like to understand, what are the mininal features of an O365 account so that it can be used from another application.

I have performed different tests, which allow me to indicate that the account is Ok.

Thank you.

Check your mail's extension, try replacing .com with .co.in, this worked for me