[CentOS] Linux hosts file /etc/hosts

Tue Nov 8 18:09:51 UTC 2011
Jonathan Vomacka <juvix88 at gmail.com>

Okay so the host file only allows system applications to understand what 
IP's are bound to a specific host, but in actuality, DNS has to be setup 
correctly in terms of a public server.

Is my understanding is correct now, then I think I am good to go.
Thanks for all your help who responded to this thread Gentlemen.

On 11/8/2011 1:06 PM, Reindl Harald wrote:
> Am 08.11.2011 18:53, schrieb Jonathan Vomacka:
>> Reindl,
>> To my knowledge, all that needs to be configured is A records, MX
>> records, and SPF records (along with correlating PTR's). This is a whole
>> other subject and I feel I will have this correctly configured. My fear
>> is that someone will send email out from my server, and the hostname
>> might come back as my systems host INSTEAD of the mail server hostname.
>> Is it good measure to add it to the hosts file anyway or is this a waste
>> of time? I guess my understanding of the host file is clouded
> the host-file is simply the same as DNS in both directions and
> does nothing than resolve name/ip locally, normally not needed
> but maybe a good idea to make sure servers like httpd starts
> even if no dns is reachable at this moment because httpd refuses
> to start if he can not resolve his own name
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