[NTLUG:Discuss] Postfix

[David Stanaway]

Hosts uses your nsswitch conf


david at sprocket:~$ grep hosts /etc/nsswitch.conf
hosts:          files dns


files looks in /etc/hosts

dns looks in /etc/resolv.conf

I believe it will try and resolve the name as is, then it will try
appending the domain from resolv.conf and do a dns lookup.

If you swapped dns and files around - not sure what would happen if dns
gives an NX host (Rather than just failing to resolve due to DNS down).
If you have it that way, then lat is kinda non-standard. It should be
file dns

make sure you /etc/hosts is formated correctly too



Fred wrote:
> On Wed, 08 Aug 2007 Stuart Johnston <saj at thecommune.net> wrote:
>>
>> The host command only does DNS lookups.  Try 'ping main.
>>
>> ------------------------------
> 
> OK, not sure why, though. All my networking works just fine, just 
> didn't understand the "host" command or what it was for.
> 
> #ping main
> PING main.local (192.168.1.150) 56(84) bytes of data.
> 64 bytes from main.local (192.168.1.150): icmp_seq=1 ttl=64 time=0.061 ms
> 
> Fred
> 
> 
> 
> 
> 
>        
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