On Sat, Oct 19, 2002 at 03:01:39PM -0500, Bryant, Eric D. wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi, > > I am working on implementing a spam-filtering solution for Purdue > University and SpamAssassin is one of the products at the top of my > list. I'm wondering if you guys can give me some feedback as to what > your experiences have been thus far with SA. Here are some of the > questions I have: > > 1. Can SA work well as an opt-in/opt-out solution?
You may have a reason to do opt-in the way you described below, but it'll take a bit more work. Since SpamAssassin doesn't actually do anything with the mail it processes, your best bet is to just let the users' agents do the filtering on the X-Spam-Status header. If a user wants to opt-out, they just disable their filtering. > 2. What kind of false positive % should I expect? Very low. On the version I'm running from Debian, I've noticed that the Ratware rules sometimes cause people on mailing lists who seem to use spamming software as their MUA to get tagged as spam. > 3. Maintainability: Does SA require a lot of maintenance on a day > to day basis? After it's running smoothly, it requires so little work it's easy to forget why your mailboxes are so clean ::-) > 4. How well does it perform at large sites? (We process around > 5-700,000 emails a day) There's been lots of discussion here on the mailing list about this topic. Search the archives for the hardware people are using. My sitewide installation is relatively small, so I'm not a good representative. > 5. What MTA do you recommend? sendmail, but I'm a geek ::-). Seriously, spamassassin seems to do well with any of the major MTAs. Lots of people here using everything from postfix to exim. > The design I'm looking at is a gateway solution that our users can > opt-in to. For the ones who opt-in, we'll create a separate > junk-mail folder for them that their quarantined mail will be sent to > instead of their usual inbox. Has anyone here implemented a similar > design to this? I haven't heard of anyone doing this, but it shouldn't be too hard if you use procmail as your local delivery agent. Configure your global procmailrc to deliver mail as usual. Write a script that generates a custom ~/.procmailrc for a user. When a user runs the script it writes out a .procmailrc that pipes mail through spamd and filters the results. Watch it so you don't tread on clued users' procmailing. Maybe include a warning if the user's .procmailrc already exists, or spit the rules out to a different file... Something like that would be cool. -- Ross Vandegrift [EMAIL PROTECTED] A Pope has a Water Cannon. It is a Water Cannon. He fires Holy-Water from it. It is a Holy-Water Cannon. He Blesses it. It is a Holy Holy-Water Cannon. He Blesses the Hell out of it. It is a Wholly Holy Holy-Water Cannon. He has it pierced. It is a Holey Wholly Holy Holy-Water Cannon. Batman and Robin arrive. He shoots them. ------------------------------------------------------- This sf.net email is sponsored by: Access Your PC Securely with GoToMyPC. Try Free Now https://www.gotomypc.com/s/OSND/DD _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
