[monitoring-plugins] check_smtp.c: modified SSL check for use with -e

[Oliver Skibbe]

 Module: monitoring-plugins
 Branch: master
 Commit: b6de2341f8683d51b8723b772e4753507b1607f5
 Author: Oliver Skibbe <oliskibbe at gmail.com>
   Date: Thu Oct  8 09:04:29 2015 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=b6de234

check_smtp.c: modified SSL check for use with -e

  - currently STARTTLS check does not work with -e if there's text
    like '220 hostname ESMTP*'. This is caused by SMTP answer from
    host. Postfix answer: 220 2.0.0 Ready to start TLS, Exchange
    2010: 220 2.0.0 SMTP server ready. This fix checks against 220

    closes #1093

---

 plugins/check_smtp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c
index 2e9b68b..1996c6d 100644
--- a/plugins/check_smtp.c
+++ b/plugins/check_smtp.c
@@ -231,7 +231,7 @@ main (int argc, char **argv)
 		  send(sd, SMTP_STARTTLS, strlen(SMTP_STARTTLS), 0);
 
 		  recvlines(buffer, MAX_INPUT_BUFFER); /* wait for it */
-		  if (!strstr (buffer, server_expect)) {
+		  if (!strstr (buffer, SMTP_EXPECT)) {
 		    printf (_("Server does not support STARTTLS\n"));
 		    smtp_quit();
 		    return STATE_UNKNOWN;