Why are my logs filling up with "Milter change: header..." entries?

strict warning: Declaration of views_plugin_style_default::options() should be compatible with views_object::options() in /var/www/www.mimedefang.org/sites/all/modules/views/plugins/views_plugin_style_default.inc on line 0.

Symptom: I am running MIMEDefang, but now I am getting a lot of messages in my syslog that look like this:

Milter change: header MIME-Version: from 1.0 to 1.0

Cause: It is actually the Milter engine of sendmail that is logging all those. To reduce the amount of logging, try putting this line:

define(`confMILTER_LOG_LEVEL', `8')dnl

in your sendmail.mc file and then re-generate your sendmail.cf.