Date: Thu, 10 Jul 2003 15:16:46 -0400 From: Doug Lee <dgl@dlee.org> To: lewiz <purple@lewiz.info>, freebsd-questions@freebsd.org Subject: Re: Spam and ad/popup blockers: Recommendations please Message-ID: <20030710191646.GL485@kirk.dlee.org> In-Reply-To: <20030710191011.GC709@lewiz.org> References: <20030710160543.GJ485@kirk.dlee.org> <20030710191011.GC709@lewiz.org>
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Oops, I meant to mention I use sendmail for my MTA but sometimes consider switching to Postfix for ease of maintenance. Leaving the rest of this message here for anyone reading last-first; sorry for top-quoting... On Thu, Jul 10, 2003 at 08:10:11PM +0100, lewiz wrote: > On Thu, Jul 10, 2003 at 12:05:43PM -0400, Doug Lee wrote: > > I seek a good system (or systems) for filtering out mail spam, email > > viruses, and web pop-up ads and such at our FreeBSD Internet gateway. > > For adverts I run Squid with adzap (in the ports). I find it pretty > good, although I find the pop-up support a little less advanced. > > The email situation is different (since not everybody runs the same MTA > (although /almost/ all people running proxies I know do use squid)) and > depends heavily on your MTA. I have tried quite a few (although for > very low volume) and am now settled on Exim (althogh Postfix would suit > my needs just as well). Whatever you do (imho) do /not/ use Courier, > because it is slightly pedantic about standards. > > I run Exim with Julian Page's MailScanner (http://mailscanner.info/), > which I find suits my purposes nicely. It supports many virus scanners > and uses SpamAssassin for spam checks (SpamAssassin also supports > Bayesian filtering). You can use more than one virus scanner, too. > > If you're using Qmail, there is the excellent Qmail-scanner, which does > a similar job. MailScanner will also work with Qmail, though, and I > like the way it works. Postfix and Sendmail are also supported. > > Another cross-MTA scanner is amavis (incld. amavis, amavisd and > amavisd-new -- who knows which to pick?). > > SpamAssassian can either add headers to ``considered spam mails'' and > you can filter them on a per-user basis with procmail (or even allow the > user to do it from the MUA -- possibly changing the Subject instead of > the header), or just delete the mail. > > > mailscanner > > Weee! > > > Spam Assassin > > Used by MailScanner. > > > Vipul's Razor (the razor-agents port) > > See above. > > > 2. Minimal upkeep time required from admin. > > Since setup I've not had to look at MailScanner (or adzap) again. > > > 3. Simplicity of use by user (users can mail spam to an address I set > > up so it's flagged as spam, but I don't want users to have to know a > > lot of tech stuff like procmail just to filter spam). > > You could easily do something yourself to create a procmailrc, or just > provide a stock one, and allow more advanced users to modify it, if they > wish. > > > Virus protection at the gateway is a lower priority since we protect > > individual computers, but it wouldn't hurt. > > For mail it's more important to do it at the gateway, I would have > thought. Especially where Outlook is concerned... :) > > Best wishes, > > -lewiz. > > -- > Don't feed the bats tonight. > ------------------------------------------------------------------------ > -| msn:purple@lewiz.net | jab:lewiz@jabber.org | url:http://lewiz.net |- -- Doug Lee dgl@dlee.org http://www.dlee.org Bartimaeus Group doug@bartsite.com http://www.bartsite.com In laughter, love is found; but in tears, it is forged. (12/09/01)
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