managing spam

[Nathanael D. Noblet]

Hello,
  I use three pieces of software for this. 
1) greylisting service postgrey (soft rejects mail from a sender on
first seen for the first 10 minutes)
2) RBL - real time blacklisting, the most effective one I've found is
barracuda's (you sign up but otherwise it is free)
3) DSPAM - is a bayesian filter that catches the most of the rest.
None of these are specific to kolab but to postfix/mta's in general.
On Fri, 2015-06-26 at 11:19 -0400, John Smith wrote:
> I'm getting a ton of spam recently; 50+ messages in one day. At first
> it was just 2 or 3 per day, and I setup a few kolab filters to handle
> it based on subject or sender, a bit of a pain but doable.
> 
> Then I tested a new email client called "Geary" and the thing just
> nicely downloads all images it finds in the email; yeah at that point
> the spammers got their "this user exists and read the email"
> notification due to the image hit on their server and I suddenly
> (next day) got dumped on and it hasn't let up.
> 
> So what are my options? I can't manage this via server filters
> anymore because each subject / sender / ip address is different.
> 
> Is there not a way to say to kolab: "if sender is in addressbook,
> move email to folder X"? 
> 
> What about an easy way to run spam detection on my server; it's stock
> cent os with just kolab 3 installed. I took a peek once at installing
> a spam detection engine into kolab but my eyes sort of glazed over
> when I read the massive page of instructions. Just getting kolab
> installed was nightmare itself, don't want to take a chance of
> messing something up now that it's all working.
> 
> Am I out of luck?
> _______________________________________________
> users mailing list
> users at lists.kolab.org
> https://lists.kolab.org/mailman/listinfo/users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kolab.org/pipermail/users/attachments/20150629/91907bdf/attachment.html>