linux.conf.au	IN	A	103.84.224.29
linux.conf.au	IN	MX	mail.linux.org.au
linux.conf.au	IN	NS	daedalus.andrew.net.au
linux.conf.au	IN	NS	russell.linux.org.au
linux.conf.au	IN	TXT	v=spf1 a mx a:103.84.224.29 ip4:103.230.158.70 ip6:2404:9400:2:0:216:3eff:fee0:5b86 include:sendgrid.net include:_spf.google.com  ~all