[CentOS] Linux hosts file /etc/hosts

Tue Nov 8 17:50:09 UTC 2011
Reindl Harald <h.reindl at thelounge.net>

Am 08.11.2011 18:23, schrieb Jonathan Vomacka:
> Good afternoon Gentlemen,
> I have a question regarding /etc/hosts for CentOS 6 x64. I already have 
> a hostname set on my server, however there are 10 additional IP aliases 
> assigned to the box, one which I plan to use as a mail server. The mail 
> server will be serving mail for a completely different domain (different 
> then the default hostname of my box). My question is this: If I take one 
> of my additional IP addresses and bind it to postfix for mail, do I also 
> have to specify the remote IP and mail server hostname in /etc/hosts?
> For example my hosts looks something like this
> localhost
> Can I add?
> 66.x.x.x mail.foo.bar
> Is this even necessary?

not if your dns-servers on LAN and WAN are configured right and
if this is not the case you must not run a public mailserver

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