elasticsearch @ symbol filter

{
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "body" : {
                "query" : "text les",
                "operator": "and"
            }
          }
        }
      ]

      ,
      "filter": [
            {
                "term": {
                    "remote.keyword": "1@localhost"
                }
            }
            ]

    }
  }
}
----------
{
    "sort":[{"mam_id":{"order":"asc"}}],
    "size":50,
    "query":{
        "bool":{
            "must":{
                "simple_query_string":{
                    "query":"text les",
                    "fields":["body"],
                    "default_operator":"and"
                    }
                    },
                    "filter":[
                            {
                                "term":{
                                    "owner.keyword":"1@localhost"
                                    }
                            }
                            ]
        }

        }
        }