{"id":476941,"date":"2023-08-09T09:05:36","date_gmt":"2023-08-09T09:05:36","guid":{"rendered":""},"modified":"2023-09-05T11:13:44","modified_gmt":"2023-09-05T11:13:44","slug":"dns-spf-record","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/dns-spf-record\/","title":{"rendered":"DNS SPF \u8bb0\u5f55"},"content":{"rendered":"<p>DNS SPF \u8bb0\u5f55\u5728\u7535\u5b50\u90ae\u4ef6\u901a\u4fe1\u548c\u7f51\u7edc\u5b89\u5168\u9886\u57df\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002 DNS SPF \u8bb0\u5f55\u4ee3\u8868\u201c\u57df\u540d\u7cfb\u7edf\u53d1\u4ef6\u4eba\u7b56\u7565\u6846\u67b6\u201d\uff0c\u662f\u6253\u51fb\u5783\u573e\u90ae\u4ef6\u548c\u7f51\u7edc\u9493\u9c7c\u5c1d\u8bd5\u7684\u91cd\u8981\u5de5\u5177\u3002\u5b83\u4eec\u65e8\u5728\u5e2e\u52a9\u90ae\u4ef6\u670d\u52a1\u5668\u533a\u5206\u5408\u6cd5\u7535\u5b50\u90ae\u4ef6\u548c\u6076\u610f\u7535\u5b50\u90ae\u4ef6\u3002\u4e86\u89e3 DNS SPF \u8bb0\u5f55\u5bf9\u4e8e\u53c2\u4e0e\u7ba1\u7406\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u5668\u6216\u7ba1\u7406\u57df\u7684\u4efb\u4f55\u4eba\u90fd\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<h2>DNS SPF \u8bb0\u5f55\u7684\u5386\u53f2<\/h2>\n<p>DNS SPF \u8bb0\u5f55\u6700\u521d\u662f\u4f5c\u4e3a\u5bf9\u6297\u7535\u5b50\u90ae\u4ef6\u6b3a\u9a97\u7684\u4e00\u79cd\u65b9\u6cd5\uff0c\u8fd9\u662f\u5783\u573e\u90ae\u4ef6\u53d1\u9001\u8005\u548c\u7f51\u7edc\u9493\u9c7c\u8005\u7ecf\u5e38\u4f7f\u7528\u7684\u4e00\u79cd\u6280\u672f\u3002 SPF \u7684\u6982\u5ff5\u7531Meng Weng Wong \u4e8e2003 \u5e74\u9996\u6b21\u63d0\u51fa\uff0c\u4ed6\u8bd5\u56fe\u89e3\u51b3\u65e5\u76ca\u4e25\u91cd\u7684\u672a\u7ecf\u8bf7\u6c42\u7684\u7535\u5b50\u90ae\u4ef6\u95ee\u9898\u3002\u5728\u63a5\u4e0b\u6765\u7684\u51e0\u5e74\u91cc\uff0c\u8fd9\u4e2a\u6700\u521d\u7684\u60f3\u6cd5\u5f97\u5230\u4e86\u5b8c\u5584\u3001\u6807\u51c6\u5316\uff0c\u5e76\u6700\u7ec8\u7531\u4e92\u8054\u7f51\u5de5\u7a0b\u4efb\u52a1\u7ec4 (IETF) \u4e8e 2006 \u5e74\u4f5c\u4e3a RFC 4408 \u53d1\u5e03\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0cSPF \u4e0e DKIM \u7b49\u6280\u672f\u4e00\u8d77\u6210\u4e3a\u73b0\u4ee3\u7535\u5b50\u90ae\u4ef6\u9a8c\u8bc1\u673a\u5236\u7684\u57fa\u77f3\u3002\u548c DMARC\u3002<\/p>\n<h2>DNS SPF \u8bb0\u5f55\uff1a\u6df1\u5165\u4e86\u89e3<\/h2>\n<p>DNS SPF \u8bb0\u5f55\u672c\u8d28\u4e0a\u662f\u57df DNS \u8bbe\u7f6e\u4e2d\u7684 TXT \u8bb0\u5f55\uff0c\u7528\u4e8e\u6307\u5b9a\u5141\u8bb8\u54ea\u4e9b\u90ae\u4ef6\u670d\u52a1\u5668\u4ee3\u8868\u57df\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u3002\u5b83\u901a\u8fc7\u68c0\u67e5\u4f20\u5165\u7535\u5b50\u90ae\u4ef6\u662f\u5426\u6e90\u81ea\u57df\u6240\u6709\u8005\u8ba4\u53ef\u7684\u670d\u52a1\u5668\uff0c\u5e2e\u52a9\u6536\u4ef6\u4eba\u670d\u52a1\u5668\u9a8c\u8bc1\u4f20\u5165\u7535\u5b50\u90ae\u4ef6\u7684\u771f\u5b9e\u6027\u3002<\/p>\n<p>\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u65f6\uff0c\u63a5\u6536\u90ae\u4ef6\u670d\u52a1\u5668\u53ef\u4ee5\u68c0\u67e5\u53d1\u4ef6\u4eba\u57df\u7684 SPF \u8bb0\u5f55\u3002\u5982\u679c\u53d1\u4ef6\u670d\u52a1\u5668\u7684 IP \u5730\u5740\u5728 SPF \u8bb0\u5f55\u4e2d\u5217\u51fa\uff0c\u5219\u7535\u5b50\u90ae\u4ef6\u5df2\u901a\u8fc7\u8eab\u4efd\u9a8c\u8bc1\u3002\u5982\u679c\u4e0d\u662f\uff0c\u8be5\u7535\u5b50\u90ae\u4ef6\u53ef\u80fd\u4f1a\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u6216\u5177\u6709\u6f5c\u5728\u5371\u9669\u3002<\/p>\n<h2>DNS SPF \u8bb0\u5f55\u7684\u5185\u90e8\u7ed3\u6784<\/h2>\n<p>SPF \u8bb0\u5f55\u7531\u51e0\u4e2a\u90e8\u5206\u7ec4\u6210\uff1a<\/p>\n<ul>\n<li>\u8fd9 <code data-no-translation=\"\">v=spf1<\/code> tag\uff1a\u8868\u793a\u8be5TXT\u8bb0\u5f55\u662fSPF\u8bb0\u5f55\u3002<\/li>\n<li>\u6388\u6743\u4ee3\u8868\u57df\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u7684 IP \u5730\u5740\u6216\u57df\u7684\u5217\u8868\u3002\u8fd9\u4e9b\u53ef\u4ee5\u6307\u5b9a\u4e3a\u5355\u72ec\u7684 IP \u5730\u5740\uff08\u4f8b\u5982 <code data-no-translation=\"\">ip4:192.0.2.0<\/code> \u6216\u8005 <code data-no-translation=\"\">ip6:2001:db8::<\/code>\uff09\u6216\u57df\uff08\u5982 <code data-no-translation=\"\">include:example.com<\/code>).<\/li>\n<li>\u8fd9 <code data-no-translation=\"\">all<\/code> \u673a\u5236\uff1a\u6307\u5b9a\u670d\u52a1\u5668\u5e94\u5982\u4f55\u5904\u7406\u6765\u81ea SPF \u8bb0\u5f55\u4e2d\u672a\u5217\u51fa\u7684 IP \u5730\u5740\u7684\u90ae\u4ef6\u3002\u5b83\u53ef\u4ee5\u5e26\u6709\u524d\u7f00 <code data-no-translation=\"\">-<\/code> \uff08\u5931\u8d25\uff09\uff0c <code data-no-translation=\"\">~<\/code> \uff08\u8f6f\u6545\u969c\uff09\uff0c <code data-no-translation=\"\">+<\/code> \uff08\u901a\u8fc7\uff09\uff0c\u6216 <code data-no-translation=\"\">?<\/code> \uff08\u4e2d\u6027\u7684\uff09\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0cSPF \u8bb0\u5f55\u53ef\u80fd\u5982\u4e0b\u6240\u793a\uff1a <code data-no-translation=\"\">v=spf1 ip4:192.0.2.0 include:example.com ~all<\/code>.<\/p>\n<h2>DNS SPF \u8bb0\u5f55\u7684\u4e3b\u8981\u7279\u5f81<\/h2>\n<ul>\n<li><strong>\u7535\u5b50\u90ae\u4ef6\u771f\u5b9e\u6027<\/strong>\uff1aSPF \u8bb0\u5f55\u4f7f\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u5668\u80fd\u591f\u5bf9\u4f20\u5165\u7535\u5b50\u90ae\u4ef6\u8fdb\u884c\u8eab\u4efd\u9a8c\u8bc1\uff0c\u4ece\u800c\u6700\u5927\u7a0b\u5ea6\u5730\u51cf\u5c11\u5783\u573e\u90ae\u4ef6\u548c\u7f51\u7edc\u9493\u9c7c\u5c1d\u8bd5\u3002<\/li>\n<li><strong>\u7075\u6d3b\u6027<\/strong>\uff1a\u5b83\u4eec\u5141\u8bb8\u57df\u6240\u6709\u8005\u51c6\u786e\u6307\u5b9a\u54ea\u4e9b\u670d\u52a1\u5668\u53ef\u4ee5\u4ee3\u8868\u4ed6\u4eec\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u4ea4\u4ed8\u80fd\u529b<\/strong>\uff1a\u6b63\u786e\u4f7f\u7528 SPF \u8bb0\u5f55\u53ef\u4ee5\u51cf\u5c11\u7535\u5b50\u90ae\u4ef6\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u7684\u673a\u4f1a\uff0c\u4ece\u800c\u63d0\u9ad8\u7535\u5b50\u90ae\u4ef6\u7684\u9001\u8fbe\u7387\u3002<\/li>\n<li><strong>\u5b9e\u65bd\u7b80\u5355<\/strong>\uff1aSPF \u8bb0\u5f55\u5f88\u5bb9\u6613\u5b9e\u73b0\uff0c\u53ea\u9700\u8981\u57df\u7684 DNS \u8bbe\u7f6e\u4e2d\u7684 TXT \u8bb0\u5f55\u5373\u53ef\u3002<\/li>\n<\/ul>\n<h2>DNS SPF \u8bb0\u5f55\u673a\u5236\u7684\u7c7b\u578b<\/h2>\n<p>DNS SPF \u8bb0\u5f55\u7531\u5b9a\u4e49\u63a5\u6536\u90ae\u4ef6\u670d\u52a1\u5668\u5e94\u5982\u4f55\u5904\u7406\u4f20\u5165\u90ae\u4ef6\u7684\u673a\u5236\u7ec4\u6210\u3002\u4ee5\u4e0b\u662f\u4e3b\u8981\u7684\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u673a\u5236<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><code data-no-translation=\"\">all<\/code><\/td>\n<td>\u5339\u914d\u6240\u6709\u5730\u5740\u3002\u524d\u7f00\u51b3\u5b9a\u4e86\u5bf9\u5339\u914d\u7684\u54cd\u5e94\uff08\u4f8b\u5982\uff0c <code data-no-translation=\"\">~all<\/code> \u5bf9\u4e8e\u8f6f\u6545\u969c\uff09\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">ip4<\/code><\/td>\n<td>\u4e0e\u63d0\u4f9b\u7684 IPv4 \u5730\u5740\u6216\u5b50\u7f51\u5339\u914d\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">ip6<\/code><\/td>\n<td>\u4e0e\u63d0\u4f9b\u7684 IPv6 \u5730\u5740\u6216\u5b50\u7f51\u5339\u914d\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">a<\/code><\/td>\n<td>\u5339\u914d DNS A \u6216 AAAA \u67e5\u8be2\u8fd4\u56de\u7684 IP \u5730\u5740\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">mx<\/code><\/td>\n<td>\u5339\u914d DNS MX \u67e5\u8be2\u8fd4\u56de\u7684 IP \u5730\u5740\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">ptr<\/code><\/td>\n<td>\u5339\u914d DNS PTR \u67e5\u8be2\u8fd4\u56de\u7684\u4e3b\u673a\u540d\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">exists<\/code><\/td>\n<td>\u5982\u679c\u63d0\u4f9b\u7684\u57df\u540d\u89e3\u6790\u4e3a\u5730\u5740\uff0c\u5219\u5339\u914d\u3002<\/td>\n<\/tr>\n<tr>\n<td><code data-no-translation=\"\">include<\/code><\/td>\n<td>\u5305\u62ec\u53e6\u4e00\u4e2a\u57df\u7684 SPF \u8bb0\u5f55\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4f7f\u7528 DNS SPF \u8bb0\u5f55\uff1a\u95ee\u9898\u548c\u89e3\u51b3\u65b9\u6848<\/h2>\n<p>SPF \u8bb0\u5f55\u7684\u4e00\u4e2a\u5e38\u89c1\u95ee\u9898\u662f DNS \u67e5\u627e\u8ba1\u6570\u7684\u9650\u5236\u3002\u4e00\u6761 SPF \u8bb0\u5f55\u6700\u591a\u53ea\u80fd\u5f15\u8d77 10 \u6b21 DNS \u67e5\u627e\uff0c\u4f7f\u7528\u65f6\u5f88\u5bb9\u6613\u8d85\u51fa\u8be5\u8303\u56f4 <code data-no-translation=\"\">include<\/code> \u548c <code data-no-translation=\"\">a<\/code> \u673a\u5236\u3002\u8d85\u8fc7\u6b64\u9650\u5236\u53ef\u80fd\u4f1a\u5bfc\u81f4 SPF \u9a8c\u8bc1\u5931\u8d25\u3002\u4e3a\u4e86\u514b\u670d\u8fd9\u4e2a\u95ee\u9898\uff0c\u60a8\u5e94\u8be5\u901a\u8fc7\u51cf\u5c11 DNS \u67e5\u627e\u6b21\u6570\u6765\u4f18\u5316 SPF \u8bb0\u5f55\u3002\u4f7f\u7528 IP \u5730\u5740\uff08<code data-no-translation=\"\">ip4<\/code> \u6216\u8005 <code data-no-translation=\"\">ip6<\/code>) \u5c3d\u53ef\u80fd\u4ee3\u66ff\u57df\u540d\u3002<\/p>\n<p>\u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u7531\u4e8e\u4f7f\u7528\u7b2c\u4e09\u65b9\u7535\u5b50\u90ae\u4ef6\u670d\u52a1\u800c\u4ea7\u751f\u7684\u3002\u5982\u679c\u672a\u6b63\u786e\u5305\u542b\u5728\u60a8\u7684 SPF \u8bb0\u5f55\u4e2d\uff0c\u901a\u8fc7\u8fd9\u4e9b\u670d\u52a1\u53d1\u9001\u7684\u7535\u5b50\u90ae\u4ef6\u53ef\u80fd\u4f1a\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5c06\u8fd9\u4e9b\u670d\u52a1\u6b63\u786e\u6dfb\u52a0\u5230\u60a8\u7684 SPF \u8bb0\u5f55\u4e2d\u6765\u89e3\u51b3\uff1a <code data-no-translation=\"\">include<\/code> \u673a\u5236\u3002<\/p>\n<h2>\u4e0e\u7c7b\u4f3c\u672f\u8bed\u7684\u6bd4\u8f83<\/h2>\n<p>\u867d\u7136 SPF \u662f\u7535\u5b50\u90ae\u4ef6\u5b89\u5168\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\uff0c\u4f46\u5b83\u5e76\u4e0d\u662f\u552f\u4e00\u8fd9\u6837\u505a\u7684\u534f\u8bae\u3002\u4ee5\u4e0b\u662f\u4e0e\u540c\u7c7b\u534f\u8bae\u7684\u6bd4\u8f83\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u63cf\u8ff0<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SPF\uff08\u53d1\u4ef6\u4eba\u7b56\u7565\u6846\u67b6\uff09<\/td>\n<td>\u6307\u5b9a\u54ea\u4e9b\u670d\u52a1\u5668\u53ef\u4ee5\u4ee3\u8868\u57df\u53d1\u9001\u90ae\u4ef6\u3002<\/td>\n<\/tr>\n<tr>\n<td>DKIM\uff08\u57df\u540d\u5bc6\u94a5\u8bc6\u522b\u90ae\u4ef6\uff09<\/td>\n<td>\u5c06\u6570\u5b57\u7b7e\u540d\u6dfb\u52a0\u5230\u53ef\u7531\u6536\u4ef6\u4eba\u9a8c\u8bc1\u7684\u7535\u5b50\u90ae\u4ef6\u6807\u5934\u3002<\/td>\n<\/tr>\n<tr>\n<td>DMARC\uff08\u57fa\u4e8e\u57df\u7684\u6d88\u606f\u8eab\u4efd\u9a8c\u8bc1\u3001\u62a5\u544a\u548c\u4e00\u81f4\u6027\uff09<\/td>\n<td>\u57fa\u4e8e SPF \u548c DKIM\uff0c\u6307\u5b9a\u7535\u5b50\u90ae\u4ef6\u672a\u901a\u8fc7 SPF \u6216 DKIM \u68c0\u67e5\u65f6\u5e94\u53d1\u751f\u7684\u60c5\u51b5\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e DNS SPF \u8bb0\u5f55\u76f8\u5173\u7684\u672a\u6765\u89c2\u70b9\u548c\u6280\u672f<\/h2>\n<p>SPF\u7684\u6982\u5ff5\u5728\u4e0d\u65ad\u53d1\u5c55\u3002\u76ee\u524d\uff0c\u5bf9 BIMI\uff08\u6d88\u606f\u8bc6\u522b\u54c1\u724c\u6307\u6807\uff09\u7684\u652f\u6301\u8d8a\u6765\u8d8a\u591a\uff0c\u5b83\u5efa\u7acb\u5728 SPF\u3001DKIM \u548c DMARC \u7684\u57fa\u7840\u4e0a\u3002 BIMI \u5141\u8bb8\u7ec4\u7ec7\u5728\u5ba2\u6237\u7684\u6536\u4ef6\u7bb1\u4e2d\u663e\u793a\u5176\u5fbd\u6807\uff0c\u4ece\u800c\u63d0\u9ad8\u54c1\u724c\u77e5\u540d\u5ea6\u548c\u4fe1\u4efb\u5ea6\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u968f\u7740 IPv6 \u7684\u65e5\u76ca\u666e\u53ca\uff0c\u9700\u8981\u786e\u4fdd SPF \u8bb0\u5f55\u4e0e IPv6 \u5730\u5740\u517c\u5bb9\u5e76\u505a\u597d\u51c6\u5907\u3002<\/p>\n<h2>DNS SPF \u8bb0\u5f55\u548c\u4ee3\u7406\u670d\u52a1\u5668<\/h2>\n<p>\u5982\u679c\u4ee3\u7406\u670d\u52a1\u5668\u7528\u4e8e\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\uff0c\u5219\u53ef\u80fd\u4f1a\u4f7f SPF \u8bb0\u5f55\u7684\u529f\u80fd\u53d8\u5f97\u590d\u6742\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u7684 IP \u5730\u5740\u5fc5\u987b\u5305\u542b\u5728 SPF \u8bb0\u5f55\u4e2d\uff0c\u4ee5\u786e\u4fdd\u6210\u529f\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u3002\u5426\u5219\uff0c\u901a\u8fc7\u4ee3\u7406\u53d1\u9001\u7684\u7535\u5b50\u90ae\u4ef6\u53ef\u80fd\u65e0\u6cd5\u901a\u8fc7 SPF \u68c0\u67e5\u5e76\u53ef\u80fd\u88ab\u6807\u8bb0\u4e3a\u5783\u573e\u90ae\u4ef6\u3002<\/p>\n<p>\u50cf OneProxy \u8fd9\u6837\u7684\u4ee3\u7406\u670d\u52a1\u5668\u63d0\u4f9b\u5546\u53ef\u4ee5\u901a\u8fc7\u63d0\u4f9b\u53ef\u5728\u57df\u7684 SPF \u8bb0\u5f55\u4e2d\u4f7f\u7528\u7684\u4e00\u81f4\u7684\u9759\u6001 IP \u5730\u5740\u6765\u652f\u6301 SPF \u8bb0\u5f55\u7684\u5b9e\u65bd\u3002<\/p>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173 DNS SPF \u8bb0\u5f55\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u68c0\u67e5\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li><a href=\"http:\/\/www.openspf.org\/Project_Overview\" target=\"_new\" rel=\"noopener nofollow\">SPF\u9879\u76ee\u6982\u51b5<\/a><\/li>\n<li><a href=\"https:\/\/sendgrid.com\/blog\/understanding-spf-and-dkim\/\" target=\"_new\" rel=\"noopener nofollow\">\u4e86\u89e3 SPF \u548c DKIM<\/a><\/li>\n<li><a href=\"https:\/\/dmarcly.com\/blog\/spf-syntax-table\" target=\"_new\" rel=\"noopener nofollow\">SPF \u8bed\u6cd5\u8868<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc7208\" target=\"_new\" rel=\"noopener nofollow\">IETF RFC 7208 \u2013 \u7528\u4e8e\u6388\u6743\u5728\u7535\u5b50\u90ae\u4ef6\u4e2d\u4f7f\u7528\u57df\u7684\u53d1\u4ef6\u4eba\u7b56\u7565\u6846\u67b6 (SPF)<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476942,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476941","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>The Comprehensive Guide to DNS SPF Records<\/mark>","faq_items":[{"question":"What is a DNS SPF record?","answer":"<p>A DNS SPF record is a TXT record in a domain's DNS settings that specifies which mail servers are allowed to send emails on behalf of the domain. It's a vital tool in email communications and cybersecurity to help mail servers differentiate between legitimate and malicious emails.<\/p>"},{"question":"When was the DNS SPF record first proposed and by whom?","answer":"<p>The concept of SPF was first proposed by Meng Weng Wong in 2003 to combat the growing issue of unsolicited emails. It was standardized and published as RFC 4408 by the Internet Engineering Task Force (IETF) in 2006.<\/p>"},{"question":"How does a DNS SPF record work?","answer":"<p>When an email is sent, the receiving mail server checks the SPF record of the sender's domain. If the IP address of the originating server is listed in the SPF record, the email is authenticated. If not, the email can be marked as spam or potentially dangerous.<\/p>"},{"question":"What is the structure of a DNS SPF record?","answer":"<p>An SPF record includes a tag indicating that it's an SPF record (<code>v=spf1<\/code>), a list of authorized IP addresses or domains, and an <code>all<\/code> mechanism specifying how to handle mail from IP addresses not listed in the SPF record.<\/p>"},{"question":"What are the key features of DNS SPF records?","answer":"<p>The key features of DNS SPF records include verifying email authenticity, providing flexibility in authorizing mail servers, improving email deliverability, and easy implementation.<\/p>"},{"question":"What are the common problems with SPF records and their solutions?","answer":"<p>Common problems with SPF records include exceeding the DNS lookup count and failure to authenticate emails sent through third-party services. These issues can be addressed by optimizing the SPF record to reduce DNS lookups and properly including third-party services in the SPF record.<\/p>"},{"question":"How do DNS SPF records relate to similar terms like DKIM and DMARC?","answer":"<p>While SPF specifies which servers can send mail on behalf of a domain, DKIM adds a digital signature to the email header for verification by the recipient. DMARC builds on both SPF and DKIM and specifies what should happen if an email fails SPF or DKIM checks.<\/p>"},{"question":"What future technologies are related to DNS SPF record?","answer":"<p>Future technologies related to DNS SPF record include BIMI, which enhances brand visibility and trust, and the increasing adoption of IPv6, which necessitates the compatibility of SPF records with IPv6 addresses.<\/p>"},{"question":"How do proxy servers interact with DNS SPF records?","answer":"<p>If a proxy server is used to send emails, its IP address must be included in the SPF record to ensure successful email delivery. Proxy server providers like OneProxy can provide consistent and static IP addresses for inclusion in the SPF record.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476941","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/476941\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/476942"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=476941"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}