Re: [Christmas Gift for free] 50% Spam reduction !

[Joshua Megerman <qmail@honorablemenschen.com>]

On Friday 05 January 2007 20:58, Matthew R. Dempsky wrote:
> On the topic of logging, yesterday I released greetdelay 0.02, which
> slightly improves the log output format by adding IP and pid info
> (like rblsmtpd's).

Here's a 1-line patch to your program that spits out a 554 response code 
before exiting if strict checking is enabled - this is required to maintain 
RFC2821 compliance.  Since you are accepting the connection, you must give a 
response, even if it's just "go away"...

--- greetdelay.c.orig   2007-01-04 09:03:59.000000000 -0500
+++ greetdelay.c        2007-01-06 00:07:40.000000000 -0500
@@ -54,6 +54,7 @@
     select(1,&rfds,0,0,&tv);
     if (flagstrict && FD_ISSET(0,&rfds)) {
       if (verbosity >= 1) fprintf(stderr,"greetdelay: %s pid %lu: premature 
input on stdin\n",ip,pid);
+      printf("554 You must wait until you receive the SMTP banner before 
talking\n");
       return 111;
     }
   }

Josh
-- 
Joshua Megerman
SJGames MIB #5273 - OGRE AI Testing Division
You can't win; You can't break even; You can't even quit the game.
  - Layman's translation of the Laws of Thermodynamics
qmail@honorablemenschen.com