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Re: HOLD messages CC/BCCd to more than 10 recipients?

From: Wietse Venema (wietseporcupine.org)
Date: Mon Sep 03 2007 - 12:29:45 CDT


micah milano:
> I'm looking for a way to have postfix place messages on HOLD if they
> are CC'd or BCC'd to more than 10 people. Some spammers have infected
> a system I am working with and using it to send out messages to large
> CC lists with spam contained therein. If I can HOLD these messages I
> can weed out the spammers quickly. There are some legitimate uses for
> this type of CC list, so I dont want to block it entirely.

Look for servers that implement the policy protocol as described in
http://www.postfix.org/SMTPD_POLICY_README.html.

        Wietse