I have a custom written MDA that:

1) Queries a SQL server containing the domain / user configuration.
2) Connects to spamd for message processing.

"spamd" doesn't need to be smart enough to pull the per domain / user config 
but I do need a way to pass the "required hits" threshold to "spamd" via the 
communication protocol.  That's what this patch allows:

*** spamd.orig	Fri Dec 19 11:32:31 2003
--- spamd	Fri Dec 19 15:15:42 2003
***************
*** 606,611 ****
--- 606,612 ----
      my ($method, $version, $start) = @_;
      local ($_);
      my $expected_length;
+     my $required_hits;
  
      # Protocol version 1.0 and greater may have "User:" and
      # "Content-length:" headers.  But they're not required.
***************
*** 657,662 ****
--- 658,666 ----
  	    if (/^Content-length: ([0-9]*)\r\n/i) {
  		$expected_length = $1;
  	    }
+ 	    if (/^Required-Hits: (\S*)\r\n/i) {
+ 		$required_hits = $1 + 0.00;
+ 	    }
  	}
      }
  
***************
*** 719,724 ****
--- 723,733 ----
      if($expected_length && ($actual_length != $expected_length)) {
          protocol_error ("(Content-Length mismatch: Expected $expected_length 
bytes, got $actual_length bytes)");
          return 1;
+     }
+ 
+     # If connecting client specified required-hits then update the conf
+     if (defined($required_hits)) {
+  	$spamtest->{conf}->{required_hits} = $required_hits;
      }
  
      # Now use copy-on-writed (hopefully) SA object