Following this tutorial How To Set Up a Host Name with DigitalOcean, my droplet is setup as:
Droplet IP: 18.104.22.168 Droplet name: example1
A record name: @ A record IP: 22.214.171.124 A record: example1.com. 1800 IN A 126.96.36.199
$ hostname example1
$ hostname -f example1
$ cat /etc/hosts 127.0.0.1 localhost 127.0.0.1 example1
I know is tricky, but I will add a MX record mail1.example1.com and setup Postfix, Dovecot etc. on the same droplet.
Can I just add to /etc/hosts, something like “188.8.131.52 mail1.example1.com mail1” or that will not work?
Will I get in trouble with that DNS wildcard A record?
Thank you, André
PS: I’m not using IPv6
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