I don't know if redundancy in spam filtering is typical, since getting
too much spam doesn't prevent people from continuing to work (so
temporary failures are OK). There's often sort of an informal
redundancy, since many mail clients have filtering themselves (though
they take training, so if
Question: we recently had our spam filter fail (of course late on Friday
before the 3-day weekend!). We were still able to receive mail, but with a lot
of spam. We are wondering what other organizations do for redundancy. We have
some redundancy - but not at the spam filter level. Any
