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CentOS 5.2,bind-9.3.4
主备两个DNS
备DNS上有个postfix做mail服务器
前段时间有个人的邮箱被黑了,向外发垃圾邮件,今天解决了。
前段时间的mail日志太多,没注意,今天mail日志没了,看到主备DNS还有大量解析出错的日志。
主DNS
May 6 18:06:13 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.33.1#53
May 6 18:06:13 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.37.1#53
May 6 18:06:16 ns named[4287]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 180.233.171.2#53
May 6 18:06:16 ns named[4287]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 117.34.70.101#53
May 6 18:06:22 ns named[4287]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 121.14.195.125#53
May 6 18:06:23 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.33.1#53
May 6 18:06:23 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.37.1#53
May 6 18:06:33 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.33.1#53
May 6 18:06:33 ns named[4287]: unexpected RCODE (REFUSED) resolving '_ldap._tcp.dc._msdcs.ghsewn.com/SRV/IN': 203.97.37.1#53
其中203.97.37.1这个信息最多,备DNS就没有这个了,全是其他的地址。
May 6 18:21:14 mail last message repeated 27 times
May 6 18:21:33 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 180.233.171.2#53
May 6 18:21:33 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 117.34.70.101#53
May 6 18:21:40 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 121.14.195.125#53
May 6 18:21:40 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 113.21.217.2#53
May 6 18:21:56 mail named[3731]: unexpected RCODE (REFUSED) resolving '53.97.21.210.in-addr.arpa/PTR/IN': 221.4.9.48#53
May 6 18:21:57 mail named[3731]: unexpected RCODE (REFUSED) resolving '53.97.21.210.in-addr.arpa/PTR/IN': 221.4.66.66#53
May 6 18:21:58 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 180.233.171.2#53
May 6 18:21:58 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 117.34.70.101#53
May 6 18:22:04 mail named[3731]: unexpected RCODE (SERVFAIL) resolving 'ag.gwg66.com/A/IN': 121.14.195.125#53
看着好像是向上级DNS请求解析这些域名出错,从日志的最后10000行里排序看了一下,有182个地址。求解。
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