more explicit SMTP error when email is rejected by spam filter

plus some comments

1 files changed, 8 insertions, 7 deletions

diff --git a/qmail.c b/qmail.c
index 186c092..51883e1 100644
--- a/qmail.c
+++ b/qmail.c
@@ -28,7 +28,7 @@ struct qmail *qq;
 
   if (pipe(pim) == -1) return -1;
   if (pipe(pie) == -1) { close(pim[0]); close(pim[1]); return -1; }
- 
+
   switch(qq->pid = vfork()) {
     case -1:
       close(pim[0]); close(pim[1]);
@@ -105,21 +105,22 @@ struct qmail *qq;
   exitcode = wait_exitcode(wstat);
 
   switch(exitcode) {
-    case 115: /* compatibility */
+    case 115: /* compatibility ... fall through */
     case 11: return "Denvelope address too long for qq (#5.1.3)";
+    case 21: return "Dmessage rejected by spam filter (#4.2.2)";
     case 31: return "Dmail server permanently rejected message (#5.3.0)";
     case 51: return "Zqq out of memory (#4.3.0)";
     case 52: return "Zqq timeout (#4.3.0)";
     case 53: return "Zqq write error or disk full (#4.3.0)";
-    case 0: if (!qq->flagerr) return ""; /* fall through */
+    case 0: if (!qq->flagerr) return ""; /* else fall through */
     case 54: return "Zqq read error (#4.3.0)";
     case 55: return "Zqq unable to read configuration (#4.3.0)";
     case 56: return "Zqq trouble making network connection (#4.3.0)";
     case 61: return "Zqq trouble in home directory (#4.3.0)";
-    case 63:
-    case 64:
-    case 65:
-    case 66:
+    case 63: /* fall through */
+    case 64: /* fall through */
+    case 65: /* fall through */
+    case 66: /* fall through */
     case 62: return "Zqq trouble creating files in queue (#4.3.0)";
     case 71: return "Zmail server temporarily rejected message (#4.3.0)";
     case 72: return "Zconnection to mail server timed out (#4.4.1)";