diff -udr spamass-milter-0.3.1/spamass-milter.1.in spamass-milter-0.3.1.patched/spamass-milter.1.in
--- spamass-milter-0.3.1/spamass-milter.1.in	2004-03-18 18:37:08.000000000 +0000
+++ spamass-milter-0.3.1.patched/spamass-milter.1.in	2010-01-06 14:36:33.000000000 +0000
@@ -38,6 +38,8 @@
 This may cause messages to bounce, queue, or be passed through
 unmiltered, depending on the parameters in
 .Nm sendmail Ns 's .cf file.
+.It Fl A
+Pass messages from clients using SMTP AUTH unfiltered. Use this flag if you don't want to filter outgoing mail and your users authenticate using SMTP AUTH.
 .It Fl b Ar spamaddress
 Redirects tagged spam to the specified email address.
 All envelope recipients are removed, and inserted into the message as
diff -udr spamass-milter-0.3.1/spamass-milter.cpp spamass-milter-0.3.1.patched/spamass-milter.cpp
--- spamass-milter-0.3.1/spamass-milter.cpp	2006-03-23 21:41:36.000000000 +0000
+++ spamass-milter-0.3.1.patched/spamass-milter.cpp	2010-01-06 15:36:59.000000000 +0000
@@ -170,6 +170,7 @@
 bool flag_full_email = false;		/* pass full email address to spamc */
 bool flag_expand = false;	/* alias/virtusertable expansion */
 bool warnedmacro = false;	/* have we logged that we couldn't fetch a macro? */
+bool flag_auth = false;		/* pass mail from AUTHed users without scanning? */
 
 #if defined(__FreeBSD__) /* popen bug - see PR bin/50770 */
 static pthread_mutex_t popen_mutex = PTHREAD_MUTEX_INITIALIZER;
@@ -181,7 +182,7 @@
 main(int argc, char* argv[])
 {
    int c, err = 0;
-   const char *args = "fd:mMp:P:r:u:D:i:b:B:e:x";
+   const char *args = "Afd:mMp:P:r:u:D:i:b:B:e:x";
    char *sock = NULL;
    bool dofork = false;
    char *pidfilename = NULL;
@@ -236,6 +237,9 @@
 				flag_sniffuser = true;
 				defaultuser = strdup(optarg);
 				break;
+			case 'A':
+				flag_auth = true;
+				break;
 			case 'b':
 			case 'B':
 				if (flag_bucket)
@@ -279,11 +283,12 @@
    if (!sock || err) {
       cout << PACKAGE_NAME << " - Version " << PACKAGE_VERSION << endl;
       cout << "SpamAssassin Sendmail Milter Plugin" << endl;
-      cout << "Usage: spamass-milter -p socket [-b|-B bucket] [-d xx[,yy...]] [-D host]" << endl;
+      cout << "Usage: spamass-milter -p socket [-A] [-b|-B bucket] [-d xx[,yy...]] [-D host]" << endl;
       cout << "                      [-e defaultdomain] [-f] [-i networks] [-m] [-M]" << endl;
       cout << "                      [-P pidfile] [-r nn] [-u defaultuser] [-x]" << endl;
       cout << "                      [-- spamc args ]" << endl;
       cout << "   -p socket: path to create socket" << endl;
+      cout << "   -A: pass mail from clients using SMTP AUTH without scanning." << endl;
       cout << "   -b bucket: redirect spam to this mail address.  The orignal" << endl;
       cout << "          recipient(s) will not receive anything." << endl;
       cout << "   -B bucket: add this mail address as a BCC recipient of spam." << endl;
@@ -783,6 +788,17 @@
   }
   /* debug(D_ALWAYS, "ZZZ got private context %p", sctx); */
 
+  // abort processing if mail is submitted via SMTP AUTH
+  // and the appropriate flag is set
+  if (flag_auth)
+  {
+    if (smfi_getsymval(ctx, "{auth_authen}"))
+    {
+    debug(D_ALWAYS, "Client used SMTP AUTH, passing mail without assassination");
+    return SMFIS_ACCEPT;
+    }
+  }
+
   debug(D_FUNC, "mlfi_envfrom: enter");
   try {
     // launch new SpamAssassin