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Not reachable or improvement possible (IPv6)

Unfortunately, this e-mail domain can not be reached by senders using modern IPv6 addresses, or improvement is possible. You should ask your e-mail provider to fully enable IPv6.
  • none of the mail servers (MX) comes with an IPv6 address
  • An insufficient number of name servers (NS) come with an IPv6 address.
  • Nameservers with an IPv6 address: ns4.msft.net., ns1.msft.net., ns3.msft.net., ns2.msft.net.
  • Nameservers with an IPv4 address: ns4.msft.net., ns1.msft.net., ns1a.o365filtering.com., ns3.msft.net., ns2a.o365filtering.com., ns4a.o365filtering.com., ns2.msft.net.
  • all name servers (NS) having an IPv6 address are also reachable through IPv6