SpamSieve is wildly ineffective now.

SpamSieve
,
1

At some point, SpamSieve simply stopped catching a large amount of obvious spam. It does catch SOME spam, and if I select a message and say “train as spam”, it does get moved into the Spam folder. I don’t have any other rules to conflict.

At times, it seems like it catches nothing for a while, then goes back to working better.

This is with Apple Mail under Mac OS 10.8.4.

Any ideas?

2

There’s probably something that needs to be fixed on your Mac. Please see Checking the Apple Mail Setup and What information should I include when I report a problem?.