Error in Django to show the sender's email - django

Question

I am trying to view the sender's email that is being sent to the email host. I am able to send emails to the email_host_user using environment variables and have allowed access for less secure apps in Yahoo account. However, when I do the "from_email" I received an error: SMTPSenderRefused--(550, b'Request failed; Mailbox unavailable', 'bill#yahoo.com')--'bill#yahoo.com is just a random sender's email though I am not able to send to the email_host. I think there must be some issues with my views.py? I appreciate your feedback!
settings.py
EMAIL_HOST='smtp.mail.yahoo.com'
EMAIL_HOST_USER=os.environ.get('EMAIL_HOST_USER')
EMAIL_HOST_PASSWORD=os.environ.get('EMAIL_HOST_PASSWORD')
EMAIL_PORT=587
EMAIL_USE_TLS=True
EMAIL_BACKEND='django.core.mail.backends.smtp.EmailBackend'
print(os.environ.get('EMAIL_HOST_USER'))
print(os.environ.get('EMAIL_HOST_PASSWORD'))
print(os.environ.get('SECRET_KEY'))
views.py
def contact(request):
if request.method=='POST':
message=request.POST.get('message', '')
from_email=request.POST.get('from_email', '')
send_mail('Contact Form',
message,
from_email,
[settings.EMAIL_HOST_USER],
fail_silently=False
)
return render(request, 'first_app/contact.html')
contact.html
<form action="/contact" method="POST">
{% csrf_token %}
<input type="email" name="from_email" placeholder="Your email">
<textarea name="message" placeholder="Message...">
</textarea>
<input type="submit">
</form>

Answer 1

Yahoo won't allow you to send email from an unauthorized email. You can only use your EMAIL_HOST_USER email address to send emails.
What you can do is set EMAIL_HOST_USER as sender and add a Reply-To header with the email address provided through the form.
You should use EmailMessage for this
from django.core.mail import EmailMessage
def contact(request):
if request.method=='POST':
message=request.POST.get('message', '')
from_email=request.POST.get('from_email', '')
email = EmailMessage(
subject='Contact Form',
message=message,
from_email=settings.EMAIL_HOST_USER,
recipient_list=[settings.EMAIL_HOST_USER'],
reply_to=[from_email]
)
email.send(fail_silently=False)
return render(request, 'first_app/contact.html')
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