config.json

{
    "version": "1.0.0",
    "port": 2248,
    "dns_query_timeout": 10000,
    "target_nameservers": [ "17.254.0.59", "17.254.0.50", "17.112.144.50", "17.112.144.59", "17.171.63.30", "17.171.63.40", "17.151.0.151", "17.151.0.152" ],
    "rules": [
        {
            "name": "Secretly redirect all emails coming from 127.0.0.1!",
            "query_type_matches": [ "MX" ],
            "ip_range_matches": [ "127.0.0.1/32" ],
            "modifications": [
                {
                    "answer": [
                        {
                            "name": "apple.com",
                            "type": 15,
                            "class": 1,
                            "ttl": 10,
                            "priority": 10,
                            "exchange": "hacktheplace.localhost"
                        }
                    ]
                }
            ]
        },
        {
            "name": "Make all responses NOERROR even if they've failed.",
            "query_type_matches": [ "*" ],
            "modifications": [
                {
                    "header": {
                        "rcode": 0
                    }
                }
            ]
        }
    ]
}