diff options
| -rw-r--r-- | plugins/check_smtp.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/plugins/check_smtp.c b/plugins/check_smtp.c index 2d2e2891..f96db49b 100644 --- a/plugins/check_smtp.c +++ b/plugins/check_smtp.c @@ -49,8 +49,11 @@ * 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. + * + * According to rfc821 you can include a null reversepath in the from command + * - but a log message is generated on the smtp server. */ -#define SMTP_DUMMYCMD "MAIL\r\n" +#define SMTP_DUMMYCMD "MAIL FROM:<>\r\n" #define SMTP_USE_DUMMYCMD 1 #define SMTP_QUIT "QUIT\r\n" |