Transparent hijacking of SMTP submission...

Livingood, Jason Jason_Livingood at
Mon Dec 1 13:22:08 UTC 2014

On 11/29/14, 12:26 PM, "Jean-Francois Mezei" <jfmezei_nanog at>

>However, in the case of SMTP, due to the amount of spam, most ISPs break
>"network neutrality" by blocking outbound port 25 for instance

Whatever Net Neutrality may mean this week, it is usually intended to
allow for reasonable network management practices, including preventing
network abuse. In the case of port blocking, it is permissible provided it
is disclosed transparently.

- Jason

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