error: [Errno 111] Connection refused

def contact(request):
    if request.method == 'POST':
        form = EmailForm(request.POST)

        if form.is_valid():
            mail = form.cleaned_data

            send_mail(
                'Automated Enquiry',
                'A user is interested in part ' + mail['part'] + '.Their message: ' + mail['msg'],
                mail['email'],
                ['myemail@gmail.com'],
                fail_silently = False,
            )

            return render(request, 'manager/error.html', {'msg': "Thanks, we will be in touch as soon as possible"})

    else:
        part = request.GET.get('part', '')
        form = EmailForm()

    return render(request, 'manager/contact.html', {'form': form, 'part':part})

EMAIL_HOST = 'smtp.sendgrid.net'
EMAIL_HOST_USER = 'myuser'
EMAIL_HOST_PASSWORD = 'mypassword'
EMAIL_PORT = 587
EMAIL_USE_TLS = True