My friend and I have SpamSieve 2.9.19 installed on two separate Macs, both running OS X 10.9.5. We have been using SpamSieve for many months to filter Apple Mail. It works flawlessly most of the time.
However every month or so, it just quits completely and lets dozens of spam messages through within a few-hour span. This happens to both of us independently.
Neither of us has changed our systems, added software, or done anything except operate in our normal manner. Then, “BAM” SpamSieve just goes on a vacation! Any ideas as to why this happens?