[CentOS] DKIM

mouss mouss at netoyen.net
Wed Sep 24 21:45:47 UTC 2008


Bob Hoffman wrote:
>  
> 
> 
>> $ host 72.35.68.56
>> Host 56.68.35.72.in-addr.arpa. not found: 3(NXDOMAIN) $ host 
>> 72.35.68.57 Host 57.68.35.72.in-addr.arpa. not found: 
>> 3(NXDOMAIN) $ host 72.35.68.62 Host 62.68.35.72.in-addr.arpa. 
>> not found: 3(NXDOMAIN)
>>
>> same for the IPs that don't belong to you in that network.
>>
>> anyway, that's not a big issue, except if your provider has a 
>> bad reputation...
>>
> 
> Interesting. Where did you get that from?
> 
> This is what my datacenter gave me..
> IP Assignment:			72.35.68.56/29	
> Gateway:				72.35.68.57		
> Useable:				72.35.68.58 - 62
> 
> I only can use 58-62. 62 is not set up for any domain.
> Where and how did those nubmers come up for me?
> 

they are "near" your server IP. some people check ranges and will give a 
reputation to a range instead of to each IP.


> Now I is a scared...oh boy.

there's no reason to be scared. it's just that some people want all IPs 
to have a reverse DNS (well, IPv6 is gonna change this...).





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