nanog mailing list archives

Re: Outgoing SMTP Servers


From: Scott Howard <scott () doc net au>
Date: Wed, 26 Oct 2011 19:57:23 -0700

On Tue, Oct 25, 2011 at 2:51 AM, Aftab Siddiqui <aftab.siddiqui () gmail com>wrote:

Blocking port/25 is a common practice (!= best practice) for home
users/consumers because it makes life a bit simpler in educating the end
user.


MAAWG have considered this a best practice for residential/dynamic IPs since
2005 - http://www.uceprotect.net/downloads/MAAWGPort25English.pdf

The FTC and numerous other government agreed the same year -
http://www.ftc.gov/bcp/edu/microsites/spam/zombie/letter_english.pdf (The
URL in the pdf no longer works - it's not
http://www.ftc.gov/bcp/edu/microsites/spam/zombie/)

Anyone not yet past the denial stage on this one needs to get themselves a
copy of RFC 5068 and start reading.

  Scott.


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