smtpd: log ip/hostname for failed-command events

[Anthony La Porte]

As -r1.285 does for authentication events, log address and host for 
failed-command events too.

Regards,

-- 
Ant

Index: usr.sbin/smtpd/smtp_session.c
===================================================================
RCS file: /cvs/src/usr.sbin/smtpd/smtp_session.c,v
retrieving revision 1.285
diff -u -p -r1.285 smtp_session.c
--- usr.sbin/smtpd/smtp_session.c       29 Jul 2016 08:53:07 -0000      1.285
+++ usr.sbin/smtpd/smtp_session.c       16 Aug 2016 20:55:50 -0000
@@ -2242,8 +2242,9 @@ smtp_reply(struct smtp_session *s, char 
                else {
                        strnvis(tmp, s->cmd, sizeof tmp, VIS_SAFE | VIS_CSTYLE);
                        log_info("%016"PRIx64" smtp "
-                           "event=failed-command command=\"%s\" 
result=\"%.*s\"",
-                           s->id, tmp, n, buf);
+                           "event=failed-command command=\"%s\" "
+                           "result=\"%.*s\" address=%s host=%s",
+                           s->id, tmp, n, buf, ss_to_text(&s->ss), 
s->hostname);
                }
                break;
        }