Throttling mail

Thu Mar 25 16:19:43 UTC 2004

Postfix's anvil feature may meet the need.  Its available in the CVS
snapshots.  Some basic documentation is at

http://www.porcupine.org/postfix-mirror/newdoc/anvil.8.html

-----Original Message-----
From: owner-nanog at merit.edu [mailto:owner-nanog at merit.edu]On Behalf Of
Sam Hayes Merritt, III
Sent: Thursday, March 25, 2004 7:58 AM
To: nanog at merit.edu
Cc: jose at monkey.org
Subject: Re: Throttling mail

On Thu, 25 Mar 2004, Adi Linden wrote:

> Does anyone have any resources on building a mail relay that would limit
> the amount of email a single user or ip address can relay over a given
> time period?

http://monkey.org/~jose/software/vthrottle/

It allows you to say you will only take 1 email from an IP in a given
period of time, and you can whitelist and more.

What I'm looking for that would be even better is vthrottle added onto,
or something else that I just haven't found yet, that would have a sliding
window X and say that within X we will only take Y emails, and block if
its above that. Have X and Y be a generic setting and then the ability to
change them for a given netblock, so that AOL and other large providers do
not get hit by it.

But as it is, libmilter vthrottle looks like the best there is right now.