Centos 7 dns not working, com mail is handled by 50 alt4. Complete troubleshooting guide with command examples. Sample forward zone file and reverse zone file with examples Jul 27, 2020 · How to Edit DNS Servers in CentOS Changing DNS server configuration can be very important. A switch in DNS can aid a server or user’s privacy, fix resolution issues, or allow you to use a self-created DNS server so you have full control over the process. com has IPv6 address 2a00:1450:401a:804::200e. 223. com. aspmx. The likely bug is that your system is asking it for an IPV6 address even though your system doesn't have IPV6 connectivity. 2.


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