Re: [Asrg] What are the IPs that sends mail for a domain?

Alessandro Vesely <vesely@tana.it> Wed, 01 July 2009 15:29 UTC

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Subject: Re: [Asrg] What are the IPs that sends mail for a domain?
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Dotzero wrote:
>> Thus, it turns out that if an MTA does mixed MSA and old fashioned port 25
>> relaying for its clients, its IP cannot convey accountability.
> 
> The fact that it cannot (may not?) convey accountability does not mean
> that it cannot or should not be held accountable for what it emits.

I understand the 2nd "it" as referring to the MTA, not the IP address. 
It doesn't make much difference, since both of them are objects. 
AFAICS, the point is to hold _someone_ accountable, so that it might 
be theoretically possible to claim damage, in case. It is like an 
insurance, and postmasters tend to stipulate it with IP numbers rather 
than DNS names. Why?