On 2/27/2013 2:45 PM, francis picabia wrote:

> Over 390 unique IPs simultaneously sent email at a gradual rate
> using 3 sets of
> compromised credentials.

Use postfwd or similar policy service to rate-limit the total
recipients per account over some period of time.

http://www.postfix.org/SMTPD_POLICY_README.html
http://www.postfix.org/addon.html#policy
http://postfwd.org/



  -- Noel Jones

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