Amavis not adding SPAM headers

[Frank Niedermann <fbn@thelogic.org>]

Hi,

I'm using Amavis with SpamAssassin on Debian/Testing and Amavis is configured to
add SPAM headers to every mail:

$sa_tag_level_deflt  = -999;  # add spam info headers if at, or above that level

But I don't see any SPAM headers at all in my mails, all I see is this:

X-Virus-Scanned: Debian amavisd-new at asterix.ifusion.de

What can I do to get SPAM headers?

Regards,
  Frank