Network drives and some external hard drives are not fully supported as locations for the Dropbox folder because Maestral will not be notified of file changes in those locations. The same holds for distributed filesystems or other filesystems where inotify events may be disabled. In such cases, Maestral will only upload changes when it runs a full indexing of the local folder, for instance when resuming the sync.
In such cases, it may be preferable to configure one-way syncing only so that local
changes are always ignored. This can be done through the CLI with
maestral config set
upload False and will take effect once the daemon is restarted.