As we transition to the new Hyland Community, some post links may be temporarily disrupted as we finalize redirects. We apologize for the inconvenience and are working to resolve this as quickly as possible. Details.
To send notifications, you must to configure outboud email:
https://docs.alfresco.com/content-services/7.2/config/email/
Now your alfresco trying to send mail to smtp.example.com server.
