SA not filtering on distribution lists??!

[Ted Mittelstaedt]

Hi All,

  OK I thought I knew SA but I have a strange one here that is
probably due to a configuration directive set wrong, but I don't
know what it is.
System is running sendmail and SA  3.2.5

mails sent to user e-mail addresses  get checked, and get the 
X-Spam-Status header placed in them.

Mails sent to a e-mail distribution list (ie: sa...@example.com)
do not get checked.

any suggestions?

Ted