From 1e0950766ff8ccd45432ff7bfdbfee8e824c116a Mon Sep 17 00:00:00 2001
From: Timo Sirainen <tss@iki.fi>
Date: Mon, 8 Nov 2010 18:37:25 +0000
Subject: [PATCH] lmtp proxy: Don't internally finish proxying before client
 has even sent DATA command. This fixes some crashes when all recipients were
 invalid.

---
 src/lmtp/lmtp-proxy.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/lmtp/lmtp-proxy.c b/src/lmtp/lmtp-proxy.c
index 82794ec274..eb69c8553f 100644
--- a/src/lmtp/lmtp-proxy.c
+++ b/src/lmtp/lmtp-proxy.c
@@ -202,6 +202,10 @@ static void lmtp_proxy_finish(struct lmtp_proxy *proxy)
 
 static void lmtp_proxy_try_finish(struct lmtp_proxy *proxy)
 {
+	if (proxy->finish_callback == NULL) {
+		/* DATA command hasn't been sent yet */
+		return;
+	}
 	if (lmtp_proxy_send_data_replies(proxy) &&
 	    (proxy->data_input == NULL ||
 	     proxy->data_input->eof ||
-- 
2.47.3