- A/AAA
Hostname           IP Address   TTL
mydomain.abc       1.2.3.4      Default
mail.mydomain.abc  5.6.7.8      Default

 - MX
Mail Server        Preference   Subdomain  TTL
mail.mydomain.abc   5                       Default

 - CNAME
Hostname    Aliases to         TTL
www.mail    mail.mydomain.abc  Default

- DMARC
Hostname  Value	                                                                                                        TTL
mail      v=DMARC1;p=none;pct=100;rua=mailto:dmarc-log@mail.mydomain.abc;ruf=mailto:dmarc-log@mail.mydomain.abc; fo=1;  Default