In article <416833A2.9030503@linuxbox.org> you write:
Next you'll block SIP if we start getting "spam calls"? Or any other application that pops up and is used by the same people sending spam today?
There is the issue of usability. Why does a Cable user on a dynamic range need SMTP open?
Cable modem users don't need the IPS's servers for outgoing email. They have the "always on" connection needed to reliably deliver email. The only reason email went via ISP's servers back in the dialup days was to get reliable delivery. In the US there is even more insentive to bypass the ISP's servers. Look are the way they have interpreted the wire tap laws. Sane end users would also be configuring there systems to detect interception of email. Crypto was added to SMTP for a reason. ISP's shouldn't be getting in the way of using it. Mark