That is not working for me. My winbindd is located under /usr/sbin. Yet, it will not take that entry.
When I run netstat -anp |grep -i winbindd I get the following results.
[root@me-redhat7 sbin]# netstat -anp |grep -i winbindd
tcp 0 0 192.168.2.45:53970 192.168.2.3:64321 ESTABLISHED 1739/winbindd
tcp 0 0 192.168.2.45:55773 192.168.2.3:445 ESTABLISHED 2487/winbindd
tcp 0 0 192.168.2.45:56118 192.168.2.3:445 ESTABLISHED 2488/winbindd
tcp 0 0 192.168.2.45:33901 172.21.1.191:445 ESTABLISHED 2487/winbindd
tcp 0 0 192.168.2.45:56117 192.168.2.3:445 ESTABLISHED 2486/winbindd
tcp 0 0 192.168.2.45:58423 192.168.2.3:389 ESTABLISHED 1739/winbindd
tcp 0 0 192.168.2.45:37065 192.168.2.3:445 ESTABLISHED 5483/winbindd
tcp 0 0 192.168.2.45:56115 192.168.2.3:445 ESTABLISHED 2485/winbindd
tcp 0 0 192.168.2.45:35931 192.168.2.3:445 ESTABLISHED 1739/winbindd
tcp 0 0 192.168.2.45:53743 192.168.2.3:64321 ESTABLISHED 1739/winbindd
udp 0 0 0.0.0.0:50782 0.0.0.0:* 5483/winbindd
unix 2 [ ACC ] STREAM LISTENING 19447 1713/winbindd /var/lib/samba/winbindd_privileged/pipe
unix 3 [ ] DGRAM 19986 2485/winbindd /var/lib/samba/private/msg.sock/2485
unix 2 [ ] DGRAM 19989 2486/winbindd /var/lib/samba/private/msg.sock/2486
unix 2 [ ] DGRAM 19374 1713/winbindd /var/lib/samba/private/msg.sock/1713
unix 2 [ ] DGRAM 19451 1739/winbindd /var/lib/samba/private/msg.sock/1739
unix 2 [ ] DGRAM 19990 2487/winbindd /var/lib/samba/private/msg.sock/2487
unix 2 [ ] DGRAM 19991 2488/winbindd /var/lib/samba/private/msg.sock/2488
unix 2 [ ] DGRAM 22831 2597/winbindd /var/lib/samba/private/msg.sock/2597
unix 2 [ ] DGRAM 22113 2598/winbindd /var/lib/samba/private/msg.sock/2598
unix 2 [ ] DGRAM 22124 2599/winbindd /var/lib/samba/private/msg.sock/2599
unix 2 [ ] DGRAM 3877478 5483/winbindd /var/lib/samba/private/msg.sock/5483
unix 2 [ ACC ] STREAM LISTENING 19445 1713/winbindd /run/samba/winbindd/pipe
unix 3 [ ] STREAM CONNECTED 19988 1713/winbindd
unix 3 [ ] STREAM CONNECTED 22835 1713/winbindd
unix 3 [ ] STREAM CONNECTED 21122 2487/winbindd
unix 3 [ ] STREAM CONNECTED 19984 2485/winbindd
unix 3 [ ] STREAM CONNECTED 22834 2599/winbindd
unix 3 [ ] STREAM CONNECTED 22109 2597/winbindd
unix 3 [ ] STREAM CONNECTED 19450 1713/winbindd
unix 3 [ ] STREAM CONNECTED 19987 2486/winbindd
unix 3 [ ] STREAM CONNECTED 3878823 5483/winbindd
unix 3 [ ] STREAM CONNECTED 21123 1713/winbindd
unix 3 [ ] STREAM CONNECTED 21125 1713/winbindd
unix 3 [ ] STREAM CONNECTED 22832 2598/winbindd
unix 3 [ ] STREAM CONNECTED 21124 2488/winbindd
unix 3 [ ] STREAM CONNECTED 19449 1739/winbindd
unix 2 [ ] DGRAM 3878806 5483/winbindd
unix 3 [ ] STREAM CONNECTED 19985 1713/winbindd
unix 3 [ ] STREAM CONNECTED 22833 1713/winbindd
unix 3 [ ] STREAM CONNECTED 22110 1713/winbindd
unix 2 [ ] DGRAM 19377 1713/winbindd