Low detection rate

[Carnegie, Martin]

Title: Message

Hi All,

 

We have been using SA for the past year and a half with detection rates around 95% or better (based on client feedback).  Over the past couple days (since Thursday April 21st) we have been getting lots of spam making it through with detection rates at about 50%. Has anyone else seen this?

 

We are currently on 3.0.1 with the following rules

40_antidrug.cf
70_sare_adult.cf
70_sare_html0.cf
99_chickenpox.cf
99_mangled.cf
99_sare_fraud_post25x.cf

 

We are not using Bayes, Razor or Pyzor as we have had really good success without them.

 

Any recommendations (other than the "turn on Bayes")?

 

Thanks