Apparently the attachment was deleted from my previous message,
so I'm pasting the text inline.
-Pete
-----------------Forwarded Message--------------
To: exim-users@???
From: Pete Gonzalez <pgonzalez@???>
Subject: Re: [Exim] Pseudo-rejection of Spam using local_scan()
Date: Sat, 26 Jun 2004 14:49:38 -0400
At 10:19 PM 6/24/2004, you wrote:
>followed by "250 OK id=...". Another approach would be to resend the
>rejected e-mail, but then local_scan() will get called recursively,
>requiring extra headers to distinguish the already-scanned mail.
>So apparently my choice is between dealing with that problem, or
>hacking at Exim's receive.c to implement a new code such as
>LOCAL_SCAN_FAKE_REJECT.
Attached is a patch that adds the LOCAL_SCAN_FAKE_REJECT behavior
described in my previous e-mail. Since it adds a new enum, this
patch should not break compatibility with previous local_scan()
shared libraries.
-Pete
[ exim-FakeReject.patch of type application/octet-stream deleted ]
___________________
diff -Nau src/original/local_scan.h src/local_scan.h
--- src/original/local_scan.h Thu Jun 24 22:49:57 2004
+++ src/local_scan.h Thu Jun 24 22:51:24 2004
@@ -28,7 +28,8 @@
LOCAL_SCAN_REJECT, /* Permanent rejection */
LOCAL_SCAN_REJECT_NOLOGHDR, /* Permanent rejection, no log header */
LOCAL_SCAN_TEMPREJECT, /* Temporary rejection */
- LOCAL_SCAN_TEMPREJECT_NOLOGHDR /* Temporary rejection, no log header */
+ LOCAL_SCAN_TEMPREJECT_NOLOGHDR, /* Temporary rejection, no log header */
+ LOCAL_SCAN_FAKE_REJECT /* Fake 550 rejection, but deliver anyway */
};
Common subdirectories: src/original/new and src/new
Common subdirectories: src/original/original and src/original
diff -Nau src/original/receive.c src/receive.c
--- src/original/receive.c Thu Jun 24 21:44:59 2004
+++ src/receive.c Thu Jun 24 22:51:28 2004
@@ -2608,6 +2608,28 @@
}
rc = LOCAL_SCAN_ACCEPT;
}
+else if (rc == LOCAL_SCAN_FAKE_REJECT)
+ {
+ rc = LOCAL_SCAN_ACCEPT;
+
+ if (smtp_input && !smtp_batched_input)
+ {
+ errmsg = US"550 Administrative prohibition";
+ if (local_scan_data != NULL)
+ {
+ errmsg = local_scan_data; /* use local_scan_data as custom message */
+ local_scan_data = NULL;
+ }
+
+ smtp_respond(550, TRUE, errmsg);
+ errmsg = NULL;
+ smtp_reply = US""; /* Indicate reply already sent */
+ }
+ else
+ {
+ /* Fake reject only makes sense in SMTP mode -- issue warning? */
+ }
+ }
/* Message accepted: remove newlines in local_scan_data because otherwise
the spool file gets corrupted. Ensure that all recipients are qualified. */
