make email host configurable

src/kszkepzes/settings/production.py

@@ -25,7 +25,7 @@ REST_FRAMEWORK = {
 }
 
 EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
-EMAIL_HOST = 'mail.sch.bme.hu'
+EMAIL_HOST = os.getenv('SMTP_HOST','smtp.office365.com')
 EMAIL_PORT = 587
 EMAIL_USE_TLS = True
 EMAIL_HOST_USER = os.getenv('SMTP_USER')