"Sanity Check" these results please..

[1611mac <16...@gmail.com>]

Hello, 
We send about 6500 emails to a list about 5 times a week. This is primarily outgoing info and we do not expect a lot of return email. These mailings have been going out since 2009.   Being somewhat new to this company, I had never seen mail coming back into the list address.  I became acutely aware of a spam problem a few days ago. Ratio of spam to valid emails is un-believable.

Today we have received three (3) valid emails while we have received 91 pieces of spam, a lot of it foreign.

We're on a HostGator shared server with cpanel and SA 3.1.1.  

Some SA detail:  Prior to today I had changed/added these user prefs:
required_score 4
ok_locales en
score CHARSET_FARAWAY 9
score CHARSET_FARAWAY_HEADER 9
score UNWANTED_LANGUAGE_BODY 9

However, I've had 19 spam emails delivered with a spam score of zero (0).  Strangely.. I setup a forwarder to send mails to my personal server and my personal address and the spam flagging is much, much, better. 

Simple question.... Is that typical performance for SA? The spams seem "obvious" to me and it's hard for me to believe that SA doesn't get some hits on the mail piece...

greg