diff -Naur old/user.c new/user.c
--- old/user.c	2008-05-17 22:08:52.000000000 -0700
+++ new/user.c	2008-05-17 22:09:12.000000000 -0700
@@ -86,15 +86,18 @@
 
   /* Get the default catchall box name */
   if ((fs=fopen(".qmail-default","r")) == NULL) {
-    /* report error opening .qmail-default and exit */
+    /* USED TO report error opening .qmail-default and exit.  Now it simply fails, reports bounce-no-mailbox, and goes on.  This is because of anti-backscatter stuff which requires no .qmail-default.
     printf ("<tr><td colspan=\"%i\">%s .qmail-default</tr></td>", 
       colspan, html_text[144]);
     vclose();
-    exit(0);
+    exit(0); */
+    strcpy(TmpBuf, " bounce-no-mailbox\n");
+    bounced=1;
+  }
+  else {
+    fgets(TmpBuf, sizeof(TmpBuf), fs);
+    fclose(fs);
   }
-
-  fgets(TmpBuf, sizeof(TmpBuf), fs);
-  fclose(fs);
 
   if (*SearchUser) {
     pw = vauth_getall(dom,1,1);
@@ -611,13 +614,19 @@
 void set_qmaildefault(char *opt)
 {
  FILE *fs;
-
-  if ( (fs = fopen(".qmail-default", "w")) == NULL ) {
-    printf ("%s %s<br>\n", html_text[144], ".qmail-default");
-  } else {
-    fprintf(fs,"| %s/bin/vdelivermail '' %s\n", VPOPMAILDIR, opt);
-    fclose(fs);
-  }
+  if(!strcmp(opt, "bounce-no-mailbox"))
+   {
+    unlink(".qmail-default");
+   }
+  else
+   {
+    if ( (fs = fopen(".qmail-default", "w")) == NULL ) {
+      printf ("%s %s<br>\n", html_text[144], ".qmail-default");
+    } else {
+      fprintf(fs,"| %s/bin/vdelivermail '' %s\n", VPOPMAILDIR, opt);
+      fclose(fs);
+    }
+   }
   show_users(Username, Domain, Mytime);
   vclose();
   exit(0);
@@ -664,13 +673,17 @@
 
   /* Get the default catchall box name */
   if ((fs=fopen(".qmail-default","r")) == NULL) {
-    printf ("<tr><td colspan=\"5\">%s %s</td><tr>\n", 
+    /* USED TO report error opening .qmail-default and exit.  Now it simply fails, reports bounce-no-mailbox, and goes on.  This is because of anti-backscatter stuff which requires no .qmail-default.
+    printf ("<tr><td colspan=\"5\">%s %s</td><tr>\n",
       html_text[144], ".qmail-default");
     vclose();
-    exit(0);
+    exit(0); */
+    strcpy(TmpBuf, " bounce-no-mailbox\n");
+  }
+  else {
+    fgets(TmpBuf, sizeof(TmpBuf), fs);
+    fclose(fs);
   }
-  fgets( TmpBuf, sizeof(TmpBuf), fs);
-  fclose(fs);
 
   if (strstr(TmpBuf, " bounce-no-mailbox\n") != NULL) {
     printf ("<b>%s</b>", html_text[130]);