Почему письма отклоняются (bounce)?

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import { serialization  } from "agentinbox";
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async function handleWebhook(payload: Record<string, unknown>) {
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  if (payload.event_type === "message.bounced") {
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    const event = await serialization.events.MessageBouncedEvent.parse(payload);
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    console.log(`Bounce type: ${event.bounce.type}`);
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    console.log(`Sub type: ${event.bounce.subType}`);
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    console.log(`Message: ${event.bounce.messageId}`);
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    for (const recipient of event.bounce.recipients) {
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      console.log(`Bounced address: ${recipient.address}`);
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      if (event.bounce.type === "Permanent") {
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        await removeFromList(recipient.address);
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      }
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    }
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  }
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}

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import { AgentinboxClient } from "agentinbox";
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const client = new AgentinboxClient({ apiKey: "am_..." });
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await client.webhooks.create({
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  url: "https://your-domain.ngrok-free.app/webhooks",
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  events: ["message.bounced"],
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});