[Esa-l] Re: How to Exempt procmail-checked mails from procmail checking

[John D. Hardin]

On Thu, 14 Sep 2000, Philip Choy wrote:

> I wonder, how to configure procmail filter, so that we can exempt
> the mails that have been already checked by procmail from procmail
> checking.
> 
> Let us say, we have 2 mail servers, that are doing procmail
> filtering. It seems that it is redundant to do checking on mails
> from the other one. So, how to exempt them?

Take a look at the headers in a sanitized MIME message. You'll see
something like:

X-Security: MIME headers sanitized on hq.impsec.org
        See http://www.wolfenet.com/~jhardin/procmail-security.html
        for details. $Revision: 1.117 $Date: 2000-08-08 20:24:01-07

Assuming mail relay #1 is named "smtp.imcome.com.sg", you might put
something like this in the /etc/procmailrc file on the second gateway:

:0
* ! ^X-Security: MIME headers sanitized on smtp.imcome.com.sg
{
    INCLUDERC=/etc/procmail/html-trap.procmail
}

--
 John Hardin KA7OHZ   ICQ#15735746   http://www.wolfenet.com/~jhardin/
 jhardin at wolfenet.com      pgpk -a finger://gonzo.wolfenet.com/jhardin
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