Taken from project.mail.msu.edu Virus Blocking Any message containing a virus will be rejected and an error returned. Viruses pose several threats to user data, server stability, and to the network as a whole and therefore, we have decided to make virus blocking non-optional. An added bonus of this decision is that viruses will be prevented from spreading from mail.msu.edu users' systems. Our weapon of choice in this matter is Clam-AV. Although this is an open source project and run by volunteers, we have seen evidence that it catches more viruses than some commercial anti-virus software. Even so, we will continue to investigate commercial products for possible future use. WARNING: Viruses are not limited to email. You still need anti-virus software on your computer. Spam Filtering Users will have the option of filtering spam from mail delivered to (not forwarded from) an msu.edu address. Since the definition of spam is subjective, filtering will be optional. We will be providing SpamAssassin for this purpose, another open source product. Mail Filtering In addition to spam filters, we are also adding a general purpose mail filter. This adds the ability to reject mail from specific users or systems, to sort and deliver mail to special folders, and auto-reply vacation messages. - Peter Cole IT Administration Michigan State University Press [log in to unmask] 517.355.9543 x106 -----Original Message----- From: MSU Network Administrators Group [mailto:[log in to unmask]] On Behalf Of John Gorentz Sent: Monday, December 01, 2003 3:34 PM To: [log in to unmask] Subject: virus and spam filtering on mail.msu.edu I heard indirectly that virus and spam filtering are coming to mail.msu.edu, and sooner rather than later. Is this something that was announced at the latest MSUNAG meeting? Assuming this is true, is there any information on how spam filtering is going to be done? A few months ago I started doing virus and spam filtering on our own mail server. (We're giving people the option of giving permission to filter incoming mail or else finding somebody else's mail service to use.) The virus filtering is going fine. The spam filtering is going about as well as I expected. I'm using the blacklist services that are pre-configured by Ipswitch (the maker of our mail system). That catches a lot of spam, and I haven't had so much as one false positive reported to me. At first those filters seemed to catch about a third to a half of the spam. Now it's an ever-smaller fraction. I might start doing some "statistical filtering." But I might not do it if mail.msu.edu is going to provide better quality spam filtering than I could ever hope to do myself. When we decided to implement virus and spam filtering late last summer, we justified the effort in part because it didn't seem like mail.msu.edu would be doing it in the near future. If this is not true, I may adjust my own activities accordingly. John Gorentz W.K. Kellogg Biological Station