Email notifications from a calendar for a particular site, configured with a specific virtual host, should use the site's virtual host and not the portal instance. There are two issues with it
- If the local instance is not configured for a public virtual host, the links are no more accessible since they point to localhost:8080
- The email receiver got a wrong impression from the email, which are point to either localhost or portal virtual host rather the site they recognize
See an example below
The site is configured for a public virtual host, xxx.org
Your event with the title COH will start on 10/27/19 11:30 AM UTC.