> From: Steve <[email protected]>
> I would like for dcc to not consider, transmit, etc. locally sent
> email. By locally, I mean from cron, or other program on the Linux
> host itself. The mail system is postfix, and, we are using dcc via
> Spamassassin and procmail at delivery time.
>
> So, when mail comes from say a cron job, the ONLY received header is
> So, There is no FROM generated by Postfix.
while there might not be an SMTP From: header, I bet there is
an SMTP envelope Mail_From value.
> So, I am not sure how to
> whitelist these emails so when delivery occurs to local mail users,
> they do not get analyzed by dcc.
1. If you are using dccm with sendmail or dccproc with Postfix,
you probably know it and don't need to worry about the following:
1a. Ensure that you are using dccm or dccifd instead of dccproc
This is not strictly necessary, but it avoids some fidding
with SpamAssassin. If you are using SpamAssassin, ensure
that the DCC home directory is either the default /var/dcc
that SpamAssissin uses or that SpamAssassin is configured
to look for your preference.
Turn on dccifd by setting DCCIFD_ENABLE=on in /var/dcc/dcc_conf
Ensure that /var/dcc/libexec/rcDCC has symbolic links in /etc/init.d
rc.d, and so forth, or if you are using recent FreeBSD, ensure
that start/stop scripts in the current DCC port/packet are installed
2. turn on debug logging to by ensuring that /var/dcc/log exists and
there is a "option log-all" line in /var/dcc/whiteclnt (or that
relevant per-user whiteclnt files contain "option log-all" and the
matching per-log directories exist).
3. examine log files of mail messages for headers and other checksums to
whitelist by adding relevant lines to the main /var/dcc/whiteclnt
file or a per-user whiteclnt file
This is often easiest with web pages something like the proof-of-concept
mentioned on the main DCC web pages at
http://www.dcc-servers.net/dcc/#cgi-demo and
http://www.rhyolite.com/dcc/#cgi-demo
Those cgi scripts can be used on the main whiteclnt file and the
main log directory.
The short answer is probably to switch SpamAssassin to using dccifd
and to add these lines to /var/dcc/whiteclnt:
ok ip 127.0.0.1
ok ip ::1
Vernon Schryver [email protected]
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