We started a trial with Katharion’s anti-spam service two weeks ago, so far the results look good. All our users are saying that they are getting almost no spam, max of one or two in the past two weeks. Also, no one has reported any false positives.

Yesterday, we setup access lists on our firewall so that only Katharion’s servers can talk to our mail server.

Looks like we are below average on the percentage of spam…

Total Message Volume