PTR\uff08\u6307\u9488\uff09\u8bb0\u5f55\u7684\u4f5c\u7528\u4e0eA\u8bb0\u5f55\u76f8\u53cd – \u5b83\u5c06IP\u5730\u5740\u6620\u5c04\u5230\u4e3b\u673a\u540d\u3002\u53ef\u4ee5\u5c06\u5176\u89c6\u4e3a\u670d\u52a1\u5668\u7684\u6570\u5b57\u8eab\u4efd\u8bc1\u3002\u5f53\u670d\u52a1\u5668\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u65f6\uff0c\u63a5\u6536\u90ae\u4ef6\u670d\u52a1\u5668\u4f1a\u6267\u884c\u53cd\u5411DNS\u67e5\u627e\u4ee5\u9a8c\u8bc1\u670d\u52a1\u5668\u7684\u8eab\u4efd\u3002<\/p>\n

PTR\u8bb0\u5f55\u683c\u5f0f\u793a\u4f8b\uff1a
\n IP\u5730\u5740 \u2192 \u4e3b\u673a\u540d
\n 192.0.2.1 \u2192 server1.yourdomain.com<\/p>\n<\/div>\n

[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n

\u8bbe\u7f6ePTR\u8bb0\u5f55\u7684\u5148\u51b3\u6761\u4ef6<\/strong><\/h2>\n
\u5728\u5f00\u59cb\u914d\u7f6e\u4e4b\u524d\uff0c\u8bf7\u786e\u4fdd\u60a8\u5177\u5907\uff1a<\/p>\n
\n
DNS\u8bbe\u7f6e\u7684\u7ba1\u7406\u6743\u9650<\/li>\n
\u670d\u52a1\u5668\u7684IP\u5730\u5740<\/li>\n
\u670d\u52a1\u5668\u7684\u6709\u6548\u4e3b\u673a\u540d<\/li>\n
\u670d\u52a1\u5668\u79df\u7528\u63d0\u4f9b\u5546\u7684\u9002\u5f53\u6388\u6743<\/li>\n<\/ul>\n
[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
PTR\u8bb0\u5f55\u914d\u7f6e\u6b65\u9aa4<\/strong><\/h2>\n
\u8ba9\u6211\u4eec\u901a\u8fc7\u4e0d\u540c\u7684\u670d\u52a1\u5668\u79df\u7528\u573a\u666f\u6765\u4e86\u89e3\u8fd9\u4e2a\u8fc7\u7a0b\uff1a<\/p>\n
1. \u547d\u4ee4\u884c\u9a8c\u8bc1\uff08\u8bbe\u7f6e\u524d\uff09<\/h3>\n
$ dig -x 192.0.2.1 +short\r\n# \u5982\u679c\u672a\u8bbe\u7f6e\uff0c\u5e94\u8fd4\u56de\u60a8\u60f3\u8981\u7684\u4e3b\u673a\u540d\u6216\u65e0\u8fd4\u56de\u7ed3\u679c<\/code><\/pre>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n 2. \u4f7f\u7528\u4e3b\u8981\u63d0\u4f9b\u5546\u8bbe\u7f6ePTR\u8bb0\u5f55<\/h3>\n\u5bf9\u4e8eAWS EC2\u5b9e\u4f8b\uff1a<\/p>\n # \u4f7f\u7528AWS CLI\r\naws ec2 modify-instance-attribute \\\r\n --instance-id i-1234567890abcdef0 \\\r\n --instance-initiated-shutdown-behavior terminate<\/code><\/pre>\n\u5bf9\u4e8eLinux\u7cfb\u7edf\uff08\u68c0\u67e5\u5f53\u524dPTR\uff09\uff1a<\/p>\n $ host 192.0.2.1\r\n# \u6216\r\n$ nslookup 192.0.2.1<\/code><\/pre>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u9a8c\u8bc1PTR\u8bb0\u5f55\u914d\u7f6e<\/strong><\/h2>\n\u8bbe\u7f6ePTR\u8bb0\u5f55\u540e\uff0c\u9a8c\u8bc1\u81f3\u5173\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u5168\u9762\u7684\u6d4b\u8bd5\u65b9\u6cd5\uff1a<\/p>\n # \u4f7f\u7528dig\u9a8c\u8bc1PTR\r\ndig -x YOUR_IP_ADDRESS +short\r\n\r\n# \u4f7f\u7528host\u547d\u4ee4\r\nhost YOUR_IP_ADDRESS\r\n\r\n# \u6d4b\u8bd5\u7535\u5b50\u90ae\u4ef6\u914d\u7f6e\r\ntelnet gmail-smtp-in.l.google.com 25<\/code><\/pre>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n PTR\u8bb0\u5f55\u7ba1\u7406\u6700\u4f73\u5b9e\u8df5<\/strong><\/h2>\n\u5b9e\u65bd\u4ee5\u4e0b\u6700\u4f73\u5b9e\u8df5\u5c06\u6709\u52a9\u4e8e\u7ef4\u62a4\u6700\u4f73\u7684\u670d\u52a1\u5668\u58f0\u8a89\u548c\u7535\u5b50\u90ae\u4ef6\u6295\u9012\u80fd\u529b\uff1a<\/p>\n \n\u786e\u4fddPTR\u8bb0\u5f55\u4e0e\u670d\u52a1\u5668\u4e3b\u673a\u540d\u5339\u914d\uff08\u524d\u5411\u786e\u8ba4\u53cd\u5411DNS\uff09<\/li>\n \u5728PTR\u8bb0\u5f55\u4e2d\u4f7f\u7528\u5b8c\u5168\u9650\u5b9a\u57df\u540d\uff08FQDN\uff09<\/li>\n \u5728\u6574\u4e2a\u57fa\u7840\u8bbe\u65bd\u4e2d\u4fdd\u6301\u4e00\u81f4\u7684\u547d\u540d\u7ea6\u5b9a<\/li>\n \u5b9a\u671f\u9a8c\u8bc1PTR\u8bb0\u5f55\u72b6\u6001<\/li>\n<\/ul>\n\n\u4e13\u4e1a\u63d0\u793a\uff1a<\/strong>\u8bb8\u591a\u7535\u5b50\u90ae\u4ef6\u63d0\u4f9b\u5546\u8981\u6c42PTR\u8bb0\u5f55\u548cA\u8bb0\u5f55\u76f8\u5339\u914d\u3002\u8fd9\u79cd\u914d\u7f6e\u79f0\u4e3aFCrDNS\uff08\u524d\u5411\u786e\u8ba4\u53cd\u5411DNS\uff09\uff0c\u53ef\u663e\u8457\u63d0\u9ad8\u7535\u5b50\u90ae\u4ef6\u6295\u9012\u80fd\u529b\u3002<\/p>\n<\/div>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u5e38\u89c1PTR\u8bb0\u5f55\u95ee\u9898\u6545\u969c\u6392\u9664<\/strong><\/h2>\n\u9047\u5230PTR\u8bb0\u5f55\u95ee\u9898\u65f6\uff0c\u8bf7\u9075\u5faa\u4ee5\u4e0b\u7cfb\u7edf\u6027\u8c03\u8bd5\u65b9\u6cd5\uff1a<\/p>\n # 1. \u68c0\u67e5\u5f53\u524dPTR\u8bb0\u5f55\r\ndig -x YOUR_IP_ADDRESS +short\r\n\r\n# 2. \u9a8c\u8bc1A\u8bb0\u5f55\u662f\u5426\u5339\u914d\r\ndig HOSTNAME +short\r\n\r\n# 3. \u6d4b\u8bd5\u90ae\u4ef6\u670d\u52a1\u5668\u914d\u7f6e\r\nopenssl s_client -connect mail.example.com:587 -starttls smtp<\/code><\/pre>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u5e38\u89c1\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6848\u77e9\u9635<\/strong><\/h2>\n