Django: send email via Office365

What I have:

A domain purchased in webs.com (I'll call it contoso.com);
An Office 365 account connected to that domain (my email address is something like [email protected]);
A Django application hosted in Azure;

What I want:

I would like to configure Django in order to send emails using my [email protected] address.

What I'v done:

I tried this Django configuration:

EMAIL_USE_TLS = True
EMAIL_HOST = 'smtp.office365.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = '[email protected]'
EMAIL_HOST_PASSWORD = 'xxxxxx'

but it didn't work. So, just for a test, I tried the free Google SMTP server:

EMAIL_USE_TLS = True
EMAIL_HOST = 'smtp.gmail.com'
EMAIL_PORT = 587
EMAIL_HOST_USER = '[email protected]'
EMAIL_HOST_PASSWORD = 'yyyyyy'

This time it works but, obviously, the email is sent from [email protected] and not from [email protected].

What's wrong in the previous configuration? Or maybe I need to make some changes in my Office 365 account?

Update

So far I've tried to receive emails by setting Django's ADMINS variable in this way:

ADMINS = [('Admin Name', '[email protected]')]

And then I send the email using the logging object:

logging.error("Hello admin!!")

As said, this works only when I use smtp.gmail.com. Today I tried to use the send_mail function:

send_mail(
    'Subject here',
    'Here is the message.',
    '[email protected]',
    ['[email protected]'],
    fail_silently=False,
)

And it works both using smtp.gmail.com and smtp.office365.com configuration. Unfortunatelly this can't be a valid solution for me since I need to notify the admin in case of an error or an exception. So, why the send_mail function works with smtp.office365.com and the ADMIN setting don't?

Solution

To send email using the Office365 smtp server, the "from" user and the "host" user must be the same. So I added this setting in Django in order to send email to the admins:

SERVER_EMAIL = EMAIL_HOST_USER