fixed email settings for file invalidation tool (#999)

* fixed issue preventing sending alerts

* fixed email settings

Author: juanpablosalas

DMOps/file_invalidation_server/file_invalidation_server/settings.py

@@ -67,9 +67,9 @@
 
 EMAIL_BACKEND = "django.core.mail.backends.smtp.EmailBackend"
 
-EMAIL_HOST = os.getenv("EMAIL_HOST")
+EMAIL_HOST = os.getenv("EMAIL_HOST","cernmx.cern.ch")
 EMAIL_PORT = int(os.getenv("EMAIL_PORT", "25"))
-DEFAULT_FROM_EMAIL = os.getenv("DEFAULT_FROM_EMAIL")
+DEFAULT_FROM_EMAIL = os.getenv("DEFAULT_FROM_EMAIL","file-invalidation-tool-noreply@cern.ch")
 
 EMAIL_HOST_USER = ""
 EMAIL_HOST_PASSWORD = ""