Reducing Syslog Messages

[Robert Wagner]

Is there an easy method for reducing the amount of syslog messages that
spamass-milter creates (or is sendmail generating these)?
I see the -d nn: option, but I am unsure what is the default level <0>?  
version 0.1.3

May  1 13:21:13 myserver spamd[29901]: identified spam (6.3/5.0) for root:99
in 0.0 seconds, 1543 bytes.
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter add:
header: X-Spam-Flag: YES
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter add:
header: X-Spam-Status: Yes, hits=6.3
required=5.0\n\ttests=FORGED_MUA_OUTLOOK,HTML_60_70,HTML_IMAGE_AREA_04,\n\t
HTML_IMAGE_ONLY_04,HTML_IMAGE_RATIO_02,HTML_MESSAGE,\n\t
MIME_HTML_ONLY\n\tversion=2.53
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter add:
header: X-Spam-Level: ******
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter add:
header: X-Spam-Checker-Version: SpamAssassin 2.53 1.174.2.15-2003-03-30-exp
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter change:
header  Subject: from I think you will like this  to *****SPAM***** I think
you will like this
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter change:
header  Content-Type: from  text/html;\n        charset="us-ascii" to
multipart/mixed; boundary="----------=_3EB16599.542DC809"
May  1 13:21:13 myserver sendmail[29889]: h41ILC0L029889: Milter message:
body replaced