I am thus going to remove the "local" DNS (192.168.1.1) I planned to go up a firewall on a new server, and to transform it into DNS.
--- ########## Philippe - Forums Le 2018-05-16 06:58, Bill Cole a écrit : > On 15 May 2018, at 16:58, for...@mehl-family.fr wrote: > >> I don't want to configure DNS server on my machine. > > That's perfectly fine but it is not relevant. > > What you *want* has no effect on what *works*. If you want Postfix to > recognize an IP in RFC1918 private space as having a valid name, you MUST set > up your own DNS server that serves the relevant zone under in-addr.arpa. This > is true whether or not you *want* to configure such a server. > >> I use 2 DNS (/etc/resolv.conf) : >> >> - 1.1.1.1 > > Which will *correctly* reply that 192.168.1.1 has no name, because on the > public Internet, 192.168.1.1 has no name > >> - 192.168.1.1 > > Which will never be used as long as 1.1.1.1 responds with reasonable speed.
