* Jeff Abrahamson: > I've never seen a DNS query return an ipv6 address, so this behaviour > surprised me.
In that case, welcome to 2021. ;-) Seriously, what "a DNS query" returns, depends on the query details. # Find MX-record for a subdomain ❯ dig +short MX ml.seichter.de. 10 wedjat.horus-it.com. # Find A-Record (IPv4 address) for the previously returned MX ❯ dig +short A wedjat.horus-it.com. 95.217.42.50 # Find AAAA-Record (IPv6 address) ❯ dig +short AAAA wedjat.horus-it.com. 2a01:4f9:2a:2e8d::c0de If you send email via IPv6, your DNS- and SPF-entries should be defined accordingly, or recipients might reject your delivery attempts. -Ralph
