To help you identify hard-coded instanced URLs, the SOURCE_HOSTNAME field on the Hostname Redirects event type now tracks redirections for these URLs. For example, if your Salesforce instance is IND76, legacy instanced hostnames include ind76.salesforce.com, ind76.lightning.force.com, and MyDomainName--c.ind76.content.force.com. Redirections for legacy My Domain hostnames stop in Winter ’25. Previously, the HOSTNAME_REDIRECT field only tracked redirections from My Domain hostnames that didn’t contain an instance name.
Where: This change applies to Lightning Experience and Salesforce Classic in Enterprise, Performance, Unlimited, and Developer editions. The Hostname Redirects event is available in the API but not in the Event Monitoring Analytics app. This event is free for all customers with a 24-hour data retention period.
How: First, enable redirection logging. From Setup, in the Quick Find box, enter My Domain, and then select My Domain. In the Redirections section, click Edit. Select Log Redirections, and save your changes.