1; Copyright (C) Internet Systems Consortium, Inc. ("ISC") 2; 3; SPDX-License-Identifier: MPL-2.0 4; 5; This Source Code Form is subject to the terms of the Mozilla Public 6; License, v. 2.0. If a copy of the MPL was not distributed with this 7; file, you can obtain one at https://mozilla.org/MPL/2.0/. 8; 9; See the COPYRIGHT file distributed with this work for additional 10; information regarding copyright ownership. 11 12$TTL 600 ; 10 minutes 13@ IN SOA mname1. . ( 14 1 ; serial 15 20 ; refresh (20 seconds) 16 20 ; retry (20 seconds) 17 1814400 ; expire (3 weeks) 18 3600 ; minimum (1 hour) 19 ) 20 NS ns2 21 MX 10 mail 22 23mail A 10.0.0.1 24ns2 A 10.53.0.2 25 26; the RDATA of this record contains a name that may be considered 27; invalid and will be detected by check-names configuration. 28check-names SRV 1 2 3 _underscore 29