[CentOS] Recommend Mail Server

Robert Moskowitz rgm at htt-consult.com
Tue Nov 24 14:59:39 UTC 2009


Timo Schoeler wrote:
> thus Eero Volotinen spake:
>   
>>> An IP stack which is part of the kernel *is* (more or less) directly 
>>> exposed to the internet as long as there's the appropriate cable 
>>> connected to that machine.
>>>       
>> Yes, I hope that IP-stack is not so buggy. Anyway, I think that is 
>> easier to exploit systems via normal tcp connection as the kernel ip stack.
>>     
>
> You probably mean protocols on and/or above layer five. ;)
>   

We have had our share of TCP flaws. And somethings in network devices we 
see them come right back again.

IP machinery is simple enough, but then there is ICMP and ICMP6, and 
IPv6 Neighbor discovery, and....

>   
>> Anyway, I think that unprotected sshd is bigger risk than postfix or 
>> sendmail. Personally I cannot trust sendmail, so I am running postfix on 
>> most of mailiservers.
>>
>> --
>> Eero
>>     
>
> Timo
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>   


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