spamassassin not lethal anymore

[RW]

On Wed, 11 Jan 2017 13:45:47 -0700
Russell L. Carter wrote:

> Howdy,
> 
> I've been happy using postfix+spamassassin for a long long
> time, and it's always worked great.  However in the last
> few weeks it's not been scoring spam high enough, and in the
> last 10 days the spam is getting through in a torrent.   I
> see a lot of scores in the 1-2 range, for what is obviously
> spam.  I'm not really comfortable setting the threshold to
> 1, say.

It sounds like you are either not using Bayes or it's not working
well. If you use Bayes with auto-training it is liable to go "off the
rails". If you're just  filtering your own mail the best thing to do is
to turn-on Bayes, turn-off auto-training, and train manually
(running sa-learn as the correct unix user).

Another thing is that if you do spam filtering, you should run your
own non-forwarding DNS resolver. Shared caches can get blacklisted by
domain and IP blocklists because they can go over the usage limit for
a single IP address.