On 2006-03-09, han wrote:
> 
> but how can I persuade an administrator of an other city's ISP to add one
> line "no fixup protocol smtp 25" there??
> 

Technically Ciscos router does a MITM-attack, because it alters data in
a communication of two other parties.

I don't know of legal situation in other countries, but in Germany it is
principally illegal to supress or alter data in computer networks. It is
seen as computer sabotage. There have allready been lawsuits in similar
cases, e.g. when a provider supressed emails to a user with certain
sender addresses without even noticing the user.

Another possibility is perhaps the competition law. The argument is that
another company sabotages internet protocols to force users to use their
own (mail) services instead of let them the free choice.


-- 
Georg


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