[CentOS] Mail has quit working
gordon.messmer at gmail.com
Sun Aug 26 16:34:34 UTC 2018
On 08/26/2018 06:25 AM, TE Dukes wrote:
> Made the change above in nsswitch, rebooted, ran dig @localhost localhost +short
> Got: dig: couldn't get address for 'localhost': failure
That's a secondary issue. A properly configured DNS server *should*
answer correctly for "localhost". Yours doesn't. It's broken. Red Hat
ships ISC Bind with a working configuration (/etc/named.rfc1912.zones).
I'm not sure whether you're using something else, or if you've removed
the RFC1912 zones. Fix that later.
"host" and "dig" are both DNS tools, and won't tell you if your files
are being used properly. While you're troubleshooting the libc name
resolution system, use "getent". "getent hosts localhost" and "getent
hosts 127.0.0.1" should return something that looks vaguely like the
data in /etc/hosts. You can also verify that it works in practice using
"telnet localhost 25" to verify that you can reach services running on
the local system.
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