I agree, that’s essentially what I do with Zimbra, and I almost never get a spam message. I do, however, sometimes get good emails tagged as spam. I just put them in my non-spam folder, and my system learns. -----Original Message----- From: Speakup [mailto:speakup-bounces@xxxxxxxxxxxxxxxxx] On Behalf Of John G Heim Sent: Wednesday, January 13, 2016 8:00 AM To: Speakup is a screen review system for Linux. <speakup@xxxxxxxxxxxxxxxxx> Subject: Re: mail server setup I don't think there is a better spam filtering tool than spamassassin. I ran the mail server for my department and all by myself, I was able to get filtering as efficient as the campus mail server which used a commercial product and had a full-time employee tuning it. The secret is crowd sourcing. I had it download a new set of rules nightly and configured it to use 3 crowd sourced systems, dcc, razor and pyzor. It took a while to set all that up but once it was done, all I had to do was sit back and let the world tune my spam filter. Spamassassin is a bigger resource hog than anything else in a mail system. I think that is probably true of any spam/virus filter. There is just a lot to do. And really, it's the virus scanning part that is the worst. You don't want to skip that. We had about 200 users on a machine with 16 cores and 32 Gb of ram. It never had a problem with the load. On 01/11/2016 01:43 PM, Janina Sajka wrote: > Hi, > > I've got my crm set up via my personal ~/.procmailrc . It can also be > setup system wide, however I haven't needed that recently. > > The crm home page does discuss site wide deployment: > http://crm114.sourceforge.net/wiki/doku.php > > I note one can even use it with Spamassassin. I didn't go that way. I > dropped Spamassassin because it was spawning far too many processes > that were absorbing far too much of my available system resources, so > that other tasks on my server were suffering. > > Am I completely happy with the results? No. I still get too many false > positives and consequently still need to look at my spam folder from > time to time. I've white-listed many more email sources than I would > have expected. > > However, I see no more than a dozen or so emails in my inbox daily, > and that's a big improvement over what I was getting from Spamassassin. > > hth > > Janina > > > covici@xxxxxxxxxxxxxx writes: >> How would you use crm114 for spam filtering? Also, I am unfamiliar >> with dkim and dmark, -- I do have sendmail -- how would those help? >> >> Janina Sajka <janina@xxxxxxxxxxx> wrote: >> >>> Juan Hernandez writes: >>>> I need webmail, imap, virtual domains, spam/antivirus protection, etc. >>> Let's take them one at a time ... >>> >>> webmail >>> This one is easy. Go with squirrelmail . >>> >>> imap >>> Another easy one, dovecot . >>> >>> virtual domains >>> Any mta worth its salt will give you this. It's pretty trivial, e.g. in >>> sendmail you simply add domains into a config file, one per line. If >>> need be, you can get more elaborate, e.g. direct mail addressed to >>> a@b.c. to d@e.f. It's all very doable. >>> >>> spam/antivirus protection >>> This one is more complicated, and more important. I'm sure you're not >>> interested in becoming an open relay for every spammer on the planet? >>> So: >>> >>> Antivirus -- You probably only care if you have users on Windows. >>> clamav is my choice for this, though mine is curently broken--I don't >>> have windows clients. >>> >>> anti-spam -- much of this depends on a good mta configuration. Today's >>> mta's, you'll probably select either sendmail or procmail, set you up >>> by default with a pretty good configuration. You'll want to carefully >>> read your way through the config file to understand what's going on. >>> This is the starting point. >>> >>> Next is the process of sorting the mail that arrives into "probably OK" >>> and "probably junk" piles. People used to rely on spamassassin for >>> that, but I found it far too resource heavy and stopped using it about >>> two years ago. I'm now using crm114. And, with Jason White, I'm looking >>> at possibly moving to rstampd . >>> >>> In any case, you'll want to configure dkim and dmark for your mta. >>> These assist the net in assuring you and everyone else that what you >>> receive, and what you send is legit. >>> >>> Spam is a never ending battle. Expect to need to work on your >>> configurations and approaches from time to time as the months and years >>> go by. >>> >>> If this sounds daunting, that's probably good. It's not a trivial task, >>> but it can be fun and certainly can be rewarding. I certainly have no >>> interest in giving up my setup for some service somewhere else. >>> >>> hth >>> >>> Janina >>> >>> >>> >>> -- >>> >>> Janina Sajka, Phone: +1.443.300.2200 >>> sip:janina@xxxxxxxxxxxxxxxxxxxx >>> Email: janina@xxxxxxxxxxx >>> >>> Linux Foundation Fellow >>> Executive Chair, Accessibility Workgroup: http://a11y.org >>> >>> The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI) >>> Chair, Accessible Platform Architectures http://www.w3.org/wai/apa >>> >>> _______________________________________________ >>> Speakup mailing list >>> Speakup@xxxxxxxxxxxxxxxxx >>> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup >>> >> -- >> Your life is like a penny. You're going to lose it. The question is: >> How do >> you spend it? >> >> John Covici >> covici@xxxxxxxxxxxxxx >> _______________________________________________ >> Speakup mailing list >> Speakup@xxxxxxxxxxxxxxxxx >> http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup _______________________________________________ Speakup mailing list Speakup@xxxxxxxxxxxxxxxxx http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup
