DNS

(tag)

  • Test DNS connectivity

    I was setting up OKD on a separate VLAN and wanted to used the OKD DNS service but it just wasn’t working and I felt it was a connectivity/firewall issue but could not find a tool to test. I was testing on my Windows 10 desktop connecting to a Fedora DNS server. Port Query I… read more…

    Test DNS connectivity

  • DNS problems, email notifications not being sent

    I had a working Open Media Vault system with notifications going out and then it stopped. OMV runs on Debian. In the log I started seeing: The actual error was: postfix/error[1443]: 1D96741676: to=<joe.blogs@domain.com>, relay=none, delay=175894, delays=175853/41/0/0.24, dsn=4.4.3, status=deferred (delivery temporarily suspended: Host or domain name not found. Name service error for name=send.xtra.co.nz type=MX: Host not… read more…