{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/EmailSMTPHost",
  "title": "EmailSMTPHost",
  "type": "string",
  "description": "SMTP host.",
  "anyOf": [
    {
      "type": "string",
      "format": "hostname-rfc2181"
    },
    {
      "type": "string",
      "format": "ipv4"
    },
    {
      "type": "string",
      "format": "ipv6"
    }
  ]
}