NNSquad - Network Neutrality Squad
[ NNSquad ] Port 25 spoofing and e-mail security/privacy issues
Greetings. Over on the NNSquad Forum, there's a query from a reader regarding ISPs who are reportedly spoofing SMTP port 25 to divert input e-mail traffic to the ISPs' own servers, preventing the e-mail from reaching the addressed customer e-mail input servers ( http://forums.pfir.org/main/messages/714/828.html?1203372718 ). While this particular person appears not to be especially troubled by this behavior, such diversions could trigger obvious security and privacy concerns. While I've heard of this sort of spoofing taking place in limited circumstances such as hotel Internet access networks and the like, I'd appreciate input from the readership regarding any broader implementations of such spoofing, especially by major ISPs. Thanks. --Lauren-- NNSquad Moderator