无法找出DNS主错误：

我试图使用我的主DNS服务器和从属DNS服务器之间的区域传输，但是我无法启动我的命名服务并收到以下错误：

[root@balsam named]# systemctl status named.service ● named.service - Berkeley Internet Name Domain (DNS) Loaded: loaded (/usr/lib/systemd/system/named.service; enabled; vendor preset: disabled) Active: failed (Result: exit-code) since Sat 2017-03-11 14:43:58 EST; 7s ago Process: 2510 ExecStop=/bin/sh -c /usr/sbin/rndc stop > /dev/null 2>&1 || /bin/kill -TERM $MAINPID (code=exited, status=0/SUCCESS) Process: 2440 ExecStart=/usr/sbin/named -u named $OPTIONS (code=exited, status=0/SUCCESS) Process: 2550 ExecStartPre=/bin/bash -c if [ ! "$DISABLE_ZONE_CHECKING" == "yes" ]; then /usr/sbin/named-checkconf -z /etc/named.conf; else echo "Checking of zone files is disabled"; fi (code=exited, status=1/FAILURE) Main PID: 2443 (code=exited, status=0/SUCCESS) Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: dns_rdata_fromtext: mydb-for-172.30.20:16: near 'pine.coniferous.trees.ops.': not a valid number Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: zone 20.30.172.in-addr.arpa/IN: loading from master file mydb-for-172.30.20 failed: not a valid number Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: zone 20.30.172.in-addr.arpa/IN: not loaded due to errors. Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: _default/20.30.172.in-addr.arpa./IN: not a valid number Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: zone ajfoncec.org/IN: loaded serial 2016010301 Mar 11 14:43:58 balsam.coniferous.trees.ops bash[2550]: zone 62.168.192.in-addr.arpa/IN: loaded serial 2016010301 Mar 11 14:43:58 balsam.coniferous.trees.ops systemd[1]: named.service: control process exited, code=exited status=1 Mar 11 14:43:58 balsam.coniferous.trees.ops systemd[1]: Failed to start Berkeley Internet Name Domain (DNS). Mar 11 14:43:58 balsam.coniferous.trees.ops systemd[1]: Unit named.service entered failed state. Mar 11 14:43:58 balsam.coniferous.trees.ops systemd[1]: named.service failed. 

这是什么意思？ 我似乎无法弄清楚。

这里是它提到的区域文件：

MYDB换172.30.20

• 域名返回“ERR_NAME_RESOLUTION_FAILED”，虽然反向DNS工作
• 如何设置公共主机名
• 123-reg DNS只与子域一起工作
• 反向DNS与authentication
• DNS绑定服务器间歇性问题

 $TTL 3D @ IN SOA balsam.coniferous.trees.ops. pine.coniferous.trees.ops.( 2016010301 ; Serial 8H ; Refresh 2H ; Retry 1W ; Expire 1D ; Negative Cache TTL ); @ IN NS balsam.coniferous.trees.ops. 1 IN PTR larch.coniferous.trees.ops. 2 IN PTR balsam.coniferous.trees.ops. 3 IN PTR spruce.coniferous.trees.ops. 5 IN PTR pine.coniferous.trees.ops. 6 IN PTR fir.coniferous.trees.ops. 8 IN PTR bristlecone.coniferous.trees.ops. 5 IN MX pine.coniferous.trees.ops. 

另一个是mydb-for-ajfoncec-org

 $TTL 3D @ IN SOA vm1.ajfoncec.org. hostmaster.ajfoncec.org.( 2016010301 ; Serial 8H ; Refresh 2H ; Retry 1W ; Expire 1D ; Negative Cache TTL ); @ IN NS vm1.ajfoncec.org. vm1 IN A 192.168.62.2 vm2 IN A 192.168.62.3 vm3 IN A 192.168.62.4 host IN A 192.168.62.1 

哦，还有针叶树树

 $TTL 3D @ IN SOA balsam.coniferous.trees.ops. pine.coniferous.trees.ops.( 2016010301 ; Serial 8H ; Refresh 2H ; Retry 1W ; Expire 1D ; Negative Cache TTL ); @ IN NS balsam.coniferous.trees.ops. balsam IN A 172.30.20.2 spruce IN A 172.30.20.3 pine IN A 172.30.20.5 fir IN A 172.30.20.6 bristlecone IN A 172.30.20.8 larch IN A 172.30.20.1 pine IN MX 0 172.30.20.5 

 5 IN MX pine.coniferous.trees.ops.