{
  "id": "smtp_enhanced_status_code",
  "name": "Enhanced mail system status code",
  "status": "draft",
  "doc": "Three-part code of the result of a mail delivery from RFC 3463, as in 5.1.1. The class is 2 for success, 4 for a temporary failure and 5 for a permanent failure. The subject and the detail have one to three digits each without leading zeros. SMTP replies and delivery status notifications carry it next to the three-digit reply code (smtp_reply_code).",
  "categories": [
    {
      "id": "internet",
      "name": "Internet"
    }
  ],
  "langs": [
    {
      "id": "common",
      "name": "Common to most languages"
    }
  ],
  "is_pii": false,
  "classification": "categorical",
  "regexp": "^[245]\\.(?:0|[1-9]\\d{0,2})\\.(?:0|[1-9]\\d{0,2})$",
  "examples": [
    {
      "value": "5.1.1",
      "description": "The destination mailbox does not exist"
    },
    {
      "value": "4.2.2",
      "description": "The mailbox is full"
    },
    {
      "value": "2.1.5",
      "description": "The destination address is valid"
    },
    {
      "value": "3.1.1",
      "valid": false,
      "description": "Class 3 does not exist"
    }
  ],
  "links": [
    {
      "type": "doc",
      "url": "https://www.rfc-editor.org/rfc/rfc3463"
    }
  ],
  "translations": {
    "ru": {
      "name": "Расширенный код статуса почтовой системы"
    }
  },
  "type": "datatype"
}