Re: Header Checks, examples?

On Thu, Feb 17, 2005 at 11:48:27PM -0800, Michael Nguyen wrote:

> Hmm....maybe I can't do things in the way that I initially planned, but is
> there anything else I could do using the header_check functionality that I
> have available to me? The situation is like this:
>
> - Email comes into a server
> - If the email hasn't already been forwarded to the filtering server once,
> forward it
> - If the email has touched the filtering server, deliver it
>

Set content_filter to by default filter all mail into the filter server,
if the header is present (how do you know it is not forged???) use
FILTER smtp:[127.0.0.1]:20025 to inject the mail via SMTP right back
into an smtpd/cleanup pair with content_filter and this header check
disabled (directly to whatever destination the filter usually delivers,
thereby bypassing the filter). Beats me as to why this is a good idea
(it would not be for A/V, but it could be for anti-spam, if the header
is only added to identified spam).

--
Viktor.

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