At 01:38 PM 1/10/2013, Maurice de Laat wrote: >On Thu, Jan 10, 2013 at 01:45:43PM -0600, Chris Gebhardt - VIRTBIZ >Internet wrote: > > > 2. External MX gateway used as "spam firewall". There are several > > providers of this as a hosted service (MXLogic, Postini, VIRTBIZ) or as > > a hardware device (Barracuda, Ironport). > >I don't recommend this because of the false non deliverables this solution >often produces.
Not sure what products you used, but I have such a solution in place for myself and a couple of clients. Running a Linux based firewall in front of the network/servers and on that box a mod/add-on for that firewall that adds SMTP filtering without a hitch, utilizing both ClamAV and DSpam and a few blacklists. Easy to set up, and learned to catch +95% just within the first few hours. And all for just $0.00 (not counting a possible RAM upgrade for the firewall, as specially ClamAV is a memory hog, but that's still <$80 in most cases)... Ralf _______________________________________________ Blueonyx mailing list Blueonyx@mail.blueonyx.it http://mail.blueonyx.it/mailman/listinfo/blueonyx