At 10:32 PM 1/9/2004, Ken Raeburn wrote...

>Not in any mail I've seen so far, but the other traffic since implies I've missed 
>something.  Investigating that... my apologies.

18 U.S.C. 1030


>In any case, the quotations I've seen suggest you believe that the blocking is done 
>without authorization. 

That is correct. Understand that I am NOT referring to UCE/spam. In the case of 
UCE/Spam, I will stipulate that the intended recipient may indeed have authorized 
upstream blocking/filtering. It is, however, irrational and incorrect to argue that 
the recipient has authorized blocking/filtering of email replies sent in direct 
response to queries they have sent. RBL/DUL makes no distinction between these types 
of email, and indiscriminately causes both types to be blocked. One cannot argue that 
general "best effort" or "no guarantees" terms of service cover this situation, since 
the blocking is known and deliberate.

> As I said in my previous mail, I suspect the service agreement is likely to provide 
> for it;

I can only speak for the ISP agreements I've been a party to, and they do NOT 
authorize any upstream filtering or blocking.

>And I suspect the receiving computer to which "damage" would be done would be the 
>ISP's mail server; presumably none of this is interfering with the transmission 
>between the ISP's mail server and the customer's machine.

It is interfering with communications between sender and recipient, which is exactly 
what the cited law prohibits. The maintainer of the MX has publicly agreed to accept 
mail destined for the domain (by publishing an MX record). Blocking/refusing/filtering 
email bound for a protected system is a violation of U.S. law, unless specific 
authorization has been granted to do so, which has not occurred (see above).  


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