Opt Out Federation for a User

Disable federation for all content authored by one Joomla user.

Before you begin

User-level federation controls are supported in runtime, but there is currently no dedicated user profile form for this setting.
This is an advanced admin workflow and requires direct database access.
Confirm the numeric Joomla user ID before changing data.

Apply the opt-out

Insert or update a row in #__fediverse_user_settings:

INSERT INTO #__fediverse_user_settings (user_id, federation_enabled)
VALUES (<USER_ID>, 0)
ON DUPLICATE KEY UPDATE federation_enabled = VALUES(federation_enabled);

Replace <USER_ID> with the Joomla user ID.

Re-enable federation later

To allow that user to federate again:

INSERT INTO #__fediverse_user_settings (user_id, federation_enabled)
VALUES (<USER_ID>, 1)
ON DUPLICATE KEY UPDATE federation_enabled = VALUES(federation_enabled);

Check your result

Publish content authored by that user.
Open Components -> Fediverse -> Deliveries.
Confirm no new outbound delivery is queued for that content.

Troubleshooting

If deliveries still appear, confirm the user ID and verify the article author matches that Joomla user.
If you only need to exclude one article, use the per-content opt-out instead.