; ; DNS master file for XYZ.com in NerdWorld test network ; $ORIGIN XYZ.com. $TTL 2h @ SOA DNS.XYZ.com. Webmaster.XYZ.com. ( 202408051 ; Serial Number 2h ; Refresh Time 1h ; Retry Time 2d ; Expire Time 2h ; Negative Cache Time ) @ MX 10 T-Mail.XYZ.com. @ NS T-Server.XYZ.com. T-Mail IN A 10.10.10.110 T-Server IN A 10.10.10.100 DNS IN CNAME T-Server T-Gateway IN A 10.10.10.1 T-Web IN A 10.10.10.120 T-Client1 IN A 10.10.10.11 T-Client2 IN A 10.10.10.12 ; eMail security settings ; Sender Policy Framework (SPF) XYZ.com TXT "v=spf1 mx ~all" ; Domain Keys Identified Mail (DKIM) 20240810._dmainkey.mail.XYZ.com TXT "v=DKIM; t=s; s=email; h=sha256; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC44TokH3/yK20ivDbtodsPgxBNAAamMFSZLsdfGRVV7FK/858h5fqgZiabw0D3HjrPm8DFVNaAu1tSbMO5/eNaQtBUAtPbwPbVjJ4tesY9+y49VqGu5S9eHrE4IhmDc7FV8dOVocg2w7mHoj0jReK/uY3ZSzOMFkdV9S08nIKi1wIDAQAB;" ; Domain-based Message Authintication, Reporting, and Conformance (DMARC) _dmarc.XYZ.com TXT "v=DMARC1; p=reject; sp=reject; pct=100; aspf=s; adkim=s; fo=1; ruf=mailto:Casey@NerdWorld.org"