{"id":11156,"date":"2026-06-17T11:39:27","date_gmt":"2026-06-17T02:39:27","guid":{"rendered":"https:\/\/www.k-in.co.jp\/niwakan\/?p=11156"},"modified":"2026-07-06T11:34:44","modified_gmt":"2026-07-06T02:34:44","slug":"header_checks%e3%81%a7%e4%b8%ad%e7%b6%99%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc%e3%82%92%e5%bc%be%e3%81%8f","status":"publish","type":"post","link":"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/06\/11156\/","title":{"rendered":"header_checks\u3067\u4e2d\u7d99\u30b5\u30fc\u30d0\u30fc\u3092\u5f3e\u304f"},"content":{"rendered":"<p>postfix\u306e\u8a2d\u5b9a\u3067\u3001\u5916\u90e8\u30e1\u30fc\u30e9\u30fc\u304b\u3089\u306e\u8ee2\u9001\u6642\u306b\u5f3e\u304f\u3053\u3068\u3092\u8ffd\u52a0\u3057\u305f\u3002<br \/>\nheader-checks\u7b49\u3067\u3042\u308b\u3002<br \/>\n<!--more--><\/p>\n<p>postfix\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08main.cf\uff09\u306b\u6b21\u3092\u52a0\u3048\u308b\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">header_checks = pcre:\/opt\/local\/etc\/postfix\/header_checks\r\nmime_header_checks = pcre:\/opt\/local\/etc\/postfix\/mime_header_checks\r\nnested_header_checks = pcre:\/opt\/local\/etc\/postfix\/nested_header_checks\r\nmilter_header_checks = pcre:\/opt\/local\/etc\/postfix\/milter_header_checks<\/pre>\n<p>\u5143\u3005\u3001main.cf\u306b\u306f<br \/>\n#header_checks = regexp:\/opt\/local\/etc\/postfix\/header_checks<br \/>\n\u3068\u5165\u3063\u3066\u3044\u3066\u3001etc\/postfix\u306e\u4e2d\u306b\u3082header_checks\u30d5\u30a1\u30a4\u30eb\u304c\u5b58\u5728\u3059\u308b\u3002<br \/>\n\u3053\u308c\u3089\u306f\u3001perl\u306e\u6b63\u898f\u8868\u73fe\u691c\u7d22\u3092\u7528\u3044\u3066\u5f3e\u304f\u5bfe\u8c61\u304b\u3069\u3046\u304b\u3092\u5224\u65ad\u3059\u308b\u3002<br \/>\nregexp:\u3067\u306a\u304fprce:\u306a\u306e\u306f\u6b21\u306e\u4e00\u884c\u76ee\u3092\u4f7f\u3044\u305f\u304b\u3063\u305f\u304b\u3089\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">sudo port upgrade --enforce-variants postfix +dovecot_sasl +pcre +tls<\/pre>\n<p>\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4ed8\u3051\u52a0\u3048\u3066\u3044\u308b\u3002<br \/>\n&#8211;enforce-variants\u306fupgrade\u524d\u3068variants\u304c\u9055\u3046\uff08\u8ffd\u52a0\u3055\u308c\u3066\u3044\u308b\uff09\u304b\u3089\u3067\u3001\u5165\u308c\u306a\u3044\u3068port\u304b\u3089\u8981\u6c42\u3055\u308c\u308b\u3002<br \/>\npcre\uff08Perl Compatible Regular Expressions\uff09\u306fperl\u4e92\u63db\u6b63\u898f\u8868\u73fe\u306ec\u8a00\u8a9e\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3001\u7d44\u307f\u8fbc\u3080\u3068perl\u3068\u4e00\u7dd2\u306e\u6b63\u898f\u8868\u73fe\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308b\u3002regexp\u306e\u4e0a\u4f4d\u4e92\u63db\u3060\u3068\u601d\u3048\u3070\u826f\u3044\u3089\u3057\u3044\u3002\uff08Gemini\u3055\u3093\u60c5\u5831\uff09<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"header_checks\"># \u65b0\u3057\u3044\u6fc0\u5b89\u30c9\u30e1\u30a4\u30f3\u3092\u898b\u3064\u3051\u305f\u3089\u3001\u30ab\u30c3\u30b3\u306e\u4e2d\u306b\u300c|\u300d\u3067\u8db3\u3057\u3066\u3044\u304f\u3060\u3051\uff01\r\n\/^Received:.*\\.(site|xyz|online|top|club|cn|kr|ru)\/  REJECT Spamer-sender\r\n\r\n# \u7d4c\u7531\u30b5\u30fc\u30d0\u30fc\u3092\u5b89\u5168\u306b\u72d9\u3044\u6483\u3061\uff08\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3082\u5358\u4f53\u30c9\u30e1\u30a4\u30f3\u3082\u5b8c\u74a7\u306b\u7db2\u7f85\uff09\r\n\/^Received:.*(\\.sphcm\\.jp|@sphcm\\.jp)\/  DISCARD Spamer-sender\r\n\/^Received:.*\\.usedtruckyard\\.com\/      DISCARD Spamer-sender\r\n\/^Received:.*\\.official-vip-aiyouxi\\.com\/       DISCARD Spamer-sender\r\n\/^Received:.*\\.m01-ahd-sys\\.net\/        DISCARD Spamer-sender\r\n#\/^Received:.*\\.\/       DISCARD Spamer-sender<\/pre>\n<p>postscreen\u306f\u9001\u4fe1\u5148\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<br \/>\n\u4e2d\u9593\u306e\u7d4c\u7531Server\u306f\u30c1\u30a7\u30c3\u30af\u3057\u306a\u3044\u3002<br \/>\n\u306a\u306e\u3067\u3001header_checks\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u304f\u308b\u3002<br \/>\n\u4e0a\u306e<strong>\/^Received:.*\\.usedtruckyard\\.com\/<\/strong>\u306f\u6b63\u898f\u8868\u73fe\u3067Received\uff08\u4e2d\u7d99\u30b5\u30fc\u30d0\u30fc\uff09\u304c<strong>usedtruckyard.com<\/strong>\u306a\u3089\u5f3e\u304f<strong>DISCARD<\/strong>\uff08\u53d7\u3051\u53d6\u3063\u305f\u3075\u308a\u3092\u3057\u3066\u6368\u3066\u308b\uff09\u3068\u306a\u3063\u3066\u3044\u308b\u3002REJECT\uff08\u62d2\u5426\uff09\u3067\u306a\u304fDISCARD\u306a\u306e\u306f\u3001\u8ee2\u9001\u5148\u304c\u518d\u9001\u4fe1\u3057\u3066\u304f\u308b\uff08\u57fa\u672c\u7684\u306a\u5bfe\u5fdc\u3060\u3068\u601d\u3046\uff09\u304b\u3089\u3002<\/p>\n<p>\u540c\u69d8\u306b\u3001mime_header_checks\u306f\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\uff08\u306e\u62e1\u5f35\u5b50\uff09\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"mime_header_checks\"># \u5371\u967a\u306a\u62e1\u5f35\u5b50\u3092\u6301\u3064\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u7db2\u6253\u5c3d\uff08\u5927\u6587\u5b57\u30fb\u5c0f\u6587\u5b57\u3082 \/i \u3067\u5b8c\u5168\u7db2\u7f85\uff09\r\n\/^(Content-Type|Content-Disposition):.*name=.*\\.(exe|scr|vbs|pif|bat|cmd|msi|cpl|lnk)\/i   REJECT Dangerous Attachment Blocked\r\n\r\n# \u62e1\u5f35\u5b50\u304c2\u3064\u9023\u7d9a\u3057\u3066\u3044\u308b\u5909\u306a\u30d5\u30a1\u30a4\u30eb\u540d\u3084\u3001\u602a\u3057\u3044\u30de\u30af\u30ed\u4ed8\u304d\u30d5\u30a1\u30a4\u30eb\u3092\u62d2\u5426\r\n\/^(Content-Type|Content-Disposition):.*name=.*\\..*\\.(exe|vbs|scr|pif)\/i                REJECT Double Extension Exploit Blocked\r\n\/^(Content-Type|Content-Disposition):.*name=.*\\.(docm|xlsm|pptm|dotm|xltm)\/i           REJECT Dangerous Macro Attachment Blocked<\/pre>\n<p>\u4e2d\u8eab\u306f\u5168\u90e8\u3001Gemini\u3055\u3093\u306b\u304a\u4efb\u305b\u3067\u3042\u308b\u3002<br \/>\n\u3053\u308c\u3067\u5224\u308b\u304c\u3001Windows\u306b\u7279\u5316\u3057\u3066\u3044\u308b\u306d\u3002<br \/>\nMac\u3060\u304b\u3089\u3001\u3053\u308c\uff08mime_header_checks\uff09\u3044\u3089\u306a\u3044\u304b\u3082\u3002\uff08\u7b11\uff09<\/p>\n<p>\u6b21\u306f\u3001nested_header_checks\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\"># \u5185\u5074\u306e\u96a0\u3057\u30d5\u30a1\u30a4\u30eb\u540d\u306b\u3001\u602a\u3057\u3044\u62e1\u5f35\u5b50\uff08.exe \u3084 .scr \u306a\u3069\uff09\u304c\u3042\u3063\u305f\u3089\u5373\u62d2\u5426\r\n\/^Content-Disposition:.*filename=.*\\.(exe|scr|vbs|pif|bat|cmd|msi|cpl)\/i   REJECT Dangerous Nested Attachment Blocked\r\n\/^Content-Type:.*name=.*\\.(exe|scr|vbs|pif|bat|cmd|msi|cpl)\/i              REJECT Dangerous Nested Attachment Blocked\r\n\r\n# \u5185\u5074\u306e\u30d8\u30c3\u30c0\u30fc\u3067\u3001\u6709\u540d\u4f01\u696d\u3084\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u9a19\u3063\u3066\u3044\u308b\u5618\u3064\u304d\u3092\u72d9\u3044\u6483\u3061\r\n\/^From:.*@(apple\\.com|amazon\\.co\\.jp|k-in\\.co\\.jp)\/i   REJECT Spoofed Nested From Domain Blocked<\/pre>\n<p>\u3053\u308c\u3082Gemini\u3055\u3093\u306b\u8003\u3048\u3066\u3082\u3089\u3063\u305f\u3002\uff08\u30b3\u30e1\u30f3\u30c8\u3054\u3068\uff09<br \/>\n\u3053\u3044\u3064\u3082Windows\u4f7f\u308f\u306a\u3044\u4eba\u306b\u306f\u610f\u5473\u304c\u7121\u3044\u306a\u3002<\/p>\n<p>\u6700\u5f8c\u304c\u3001milter_header_checks\u3002\u4e2d\u8eab\u306f\u3001<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">\/^X-Spam-Flag:.*YES\/    REJECT Spam-Filter Triggered<\/pre>\n<p>\u3053\u308c\u3060\u3051\u3002<br \/>\n\u4f55\u304c\u4f55\u3067\u3082\u5c4a\u3051\u308b\u305e\u3063\u3066\u30b5\u30fc\u30d0\u30fc\uff08\u7d50\u69cb\u3042\u308b\uff09\u306f\u3001Spam\u3060\u3068\u5224\u3063\u3066\u3044\u3066\u3082\u3001\u9006\u5f15\u304d\u306b\u5931\u6557\u3057\u3066\u3082\u300cDomain\u304c\u6b63\u3057\u3044\u3001DNS\u306b\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u300dServer\u3060\u3068\u53d7\u3051\u53d6\u308b\u3002<br \/>\n\u3053\u308c\u306f\u5168\u4e16\u754c\u306b\u300c\u9006\u5f15\u304d\u3067\u304d\u306a\u3044\u30ec\u30f3\u30bf\u30eb\u30b5\u30fc\u30d0\u30fc\u300d\u306e\u5229\u7528\u8005\u304c\u591a\u3044\u305b\u3044\u3089\u3057\u3044\u3002<br \/>\n\u306a\u306e\u3067\u3001header_checks\u306e\u4e00\u884c\u76ee<br \/>\n<strong>\/^Received:.*\\.(site|xyz|online|top|club|cn|kr|ru)\/  REJECT Spamer-sender<\/strong><br \/>\n\u304c\u751f\u304d\u3066\u304f\u308b\u3002<br \/>\n\u4e2d\u7d99\u306b\u4e2d\u56fd\u3084\u30ed\u30b7\u30a2\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u7d61\u3093\u3067\u3044\u305f\u3089\u843d\u3068\u3059\u3002\u5f3e\u304f\u3002\u7121\u8996\u3059\u308b\u3002<br \/>\n\u5927\u4f53\u3053\u308c\u3067spam\u3084\u8ff7\u60d1\u30e1\u30fc\u30eb\u306f\u5f3e\u3051\u308b\u8a2d\u5b9a\u3067\u3042\u308b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>postfix\u306e\u8a2d\u5b9a\u3067\u3001\u5916\u90e8\u30e1\u30fc\u30e9\u30fc\u304b\u3089\u306e\u8ee2\u9001\u6642\u306b\u5f3e\u304f\u3053\u3068\u3092\u8ffd\u52a0\u3057\u305f\u3002 header-checks\u7b49\u3067\u3042\u308b\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[246,115],"tags":[176,175,148],"class_list":["post-11156","post","type-post","status-publish","format-standard","hentry","category-my-macmini-server","category-software","tag-mail","tag-postfix","tag-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>header_checks\u3067\u4e2d\u7d99\u30b5\u30fc\u30d0\u30fc\u3092\u5f3e\u304f - \u306b\u308f\u7ba1<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/06\/11156\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"header_checks\u3067\u4e2d\u7d99\u30b5\u30fc\u30d0\u30fc\u3092\u5f3e\u304f - \u306b\u308f\u7ba1\" \/>\n<meta property=\"og:description\" content=\"postfix\u306e\u8a2d\u5b9a\u3067\u3001\u5916\u90e8\u30e1\u30fc\u30e9\u30fc\u304b\u3089\u306e\u8ee2\u9001\u6642\u306b\u5f3e\u304f\u3053\u3068\u3092\u8ffd\u52a0\u3057\u305f\u3002 header-checks\u7b49\u3067\u3042\u308b\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/06\/11156\/\" \/>\n<meta property=\"og:site_name\" content=\"\u306b\u308f\u7ba1\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-17T02:39:27+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-06T02:34:44+00:00\" \/>\n<meta name=\"author\" content=\"foopa\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"foopa\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" 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