Fri Jan 4 04:11:39 UTC 2002
> Are there any ideas on how one would implement DCC in an enterprise > environment? Is anybody else doing it? I had before used junkfulter and procmail and added a X-SPAM header. Think lowest common denominator. That is unfortunately the typical user. My day job (sleep, what is sleep?) I have implemented DCC, RBL+ and html-trap.procmail by John Harding (http://www.impsec.org/email-tools/sanitizer-intro.html) on a linux box null client that is outside of the firewall. I have about 1200 users. The good part of using an outside null client mx server is that internal mail is not affected And, I did not have to set this up and maintain it on 10+ sites world wide. > 1) How to deal with individual whitelists in a pure sendmail/dccm environment, with the ability of users to modify their own. These are non-technical types so it would have to be easy to do (perhaps Web based). > Policy. I had set the junk threshold high, combined with RBL+ (I use http://www.orbz.org on sites that cannot afford RBL. I think Orbz does an excellent job, just that in a corporate environment, it is easier to defend MAPS to the users since it is the grand daddy of dnsblacklists), junk mail almost completely disappeared. It was easier to state this was company policy. For those who were insistant on getting all e-mail, I impliemented the spamfriends feature of sendmail. If e-mail is blocked by the dns blacklist, we told our people that it was senders problem and easily fixed. On the DCC side. It ether caught it by the count metrics. Also, if a mail was dns blacklisted, DCC caught junk mailers doing end arounds. I only had one problem with DCC. A group of engineers received the same e-mail that was sent individually on a daily bases. Although the mail was slightly different each day, the fuz1 caught it. Lastly, depending on your org, sometimes it is best not to make a fuss about it. So far in the last 3 months of use, the amount of complaints that mail got blocked is no where near the complaints that we used to get from junk mail. We even had a few user willing to run it up the flag poll to see who would salute. Hope this helps.
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