ntp服务问题

原本国内的主机直接指向阿里云就可以时间同步了  但是国外的主机

却有报错  这个报错还没有解决

1 Oct 03:47:30 ntpdate[20969]: no server suitable for synchronization found
[root@info ~]# ntpq -c version
ntpq 4.2.6p5@1.2349-o Fri Apr 13 12:52:30 UTC 2018 (1)

[root@info ~]# ntpdate -d 120.25.115.20
 1 Oct 03:47:22 ntpdate[20969]: ntpdate 4.2.6p5@1.2349-o Fri Apr 13 12:52:28 UTC 2018 (1)
Looking for host 120.25.115.20 and service ntp
host found : 120.25.115.20
transmit(120.25.115.20)
transmit(120.25.115.20)
transmit(120.25.115.20)
transmit(120.25.115.20)
transmit(120.25.115.20)
120.25.115.20: Server dropped: no data
server 120.25.115.20, port 123
stratum 0, precision 0, leap 00, trust 000
refid [120.25.115.20], delay 0.00000, dispersion 64.00000
transmitted 4, in filter 4
reference time:    00000000.00000000  Sun, Dec 31 1899 19:00:00.000
originate timestamp: 00000000.00000000  Sun, Dec 31 1899 19:00:00.000
transmit timestamp:  df5c4f90.a33c854e  Mon, Oct  1 2018  3:47:28.637
filter delay:  0.00000  0.00000  0.00000  0.00000
         0.00000  0.00000  0.00000  0.00000
filter offset: 0.000000 0.000000 0.000000 0.000000
         0.000000 0.000000 0.000000 0.000000
delay 0.00000, dispersion 64.00000
offset 0.000000

主要是红色圈出来的部分

###add at 18-10-01

echo '#time sync by nodchen at 18-09-30' >/var/spool/cron/root
echo '*/5 * * * * /usr/sbin/ntpdate ntp1.aliyun.com >/dev/null 2>&1' >/var/spool/cron/root

###  add end 18-10-01