Do not use Syncthing: https://www.gkayaalp.com/blog/20190102_syncthing.html
Syncthing is critical software that is produced sloppily, and can cause data loss when totally unnecessary and preventable. Avoid using it for valuable data.
Why is this step necessary? mastodon.sdf.org might not be the server where you are registered, so we need to redirect you to your home server first.
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