FileZilla Server Max Connections vs. Client Transfer Concurrency: Which Setting Best Mitigates Intermittent 421 Errors?
Goal: maintain reliable FileZilla Server availability during traffic bursts while avoiding intermittent "421" Too many connections responses. Constraints: the server enforces a global maximum simultaneous connections (default 50) and per‑IP limits; exceeding these triggers "421" errors. The FileZilla Client can limit concurrent transfers, which reduces the r
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