Don't leave things domains unresolved

1. Let defunct resolve your domain required

   example.com	300 IN A	34.36.101.120	; recommended for all domains and subdomains
   example.com	300 IN ALIAS	a.defunct.website	; alternative to an A record if your provider supports ALIAS
   example.com	300 IN MX	1 a.defunct.email	; we can accept email, too!

2. Configure your defunct domain's behaviour optional

   example.com	300 IN TXT	defunct.https=always	; never | optional | always | only
   example.com	300 IN TXT	defunct.mode=auto	; auto | light | dark
   example.com	300 IN TXT	defunct.theme=default	; default | status | nocontent | blank
   example.com	300 IN TXT	defunct.statuscode=410	; any valid status code (see httpstatuses.io)
   example.com	300 IN TXT	defunct.redirect=https://example.net	; absolute or relative URL (respects statuscode if 301, 302, 307 or 308)