diff options
| -rw-r--r-- | plugins/check_smtp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c index d57b7841..2c03874b 100644 --- a/plugins/check_smtp.c +++ b/plugins/check_smtp.c @@ -43,6 +43,13 @@ #define SMTP_PORT 25 #define SMTP_EXPECT "220" +/* sendmail will syslog a "NOQUEUE" error if session does not attempt + * to do something useful. This can be prevented by giving a command + * even if syntax is illegal (MAIL requires a FROM:<...> argument) + * You can disable sending DUMMYCMD by undefining SMTP_USE_DUMMYCMD. + */ +#define SMTP_DUMMYCMD "MAIL\n" +#define SMTP_USE_DUMMYCMD 1 #define SMTP_QUIT "QUIT\n" int process_arguments (int, char **); @@ -131,6 +138,12 @@ main (int argc, char **argv) } /* close the connection */ +#ifdef SMTP_USE_DUMMYCMD + send(sd,SMTP_DUMMYCMD,strlen(SMTP_DUMMYCMD),0); + /* allow for response to DUMMYCMD to reach us */ + recv(sd,buffer,MAX_INPUT_BUFFER-1,0); +#endif /* SMTP_USE_DUMMYCMD */ + send (sd, SMTP_QUIT, strlen (SMTP_QUIT), 0); close (sd); } |