{"id":11295,"date":"2026-07-02T18:39:28","date_gmt":"2026-07-02T09:39:28","guid":{"rendered":"https:\/\/www.k-in.co.jp\/niwakan\/?p=11295"},"modified":"2026-07-06T11:34:43","modified_gmt":"2026-07-06T02:34:43","slug":"postfix%e3%82%92%e6%9b%b4%e3%81%ab%e5%a0%85%e7%89%a2%e3%81%ab","status":"publish","type":"post","link":"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/07\/11295\/","title":{"rendered":"postfix\u3092\u66f4\u306b\u5805\u7262\u306b"},"content":{"rendered":"<p>postfix\u306esmtp\uff08port 25\uff09\u3078\u306e\u653b\u6483\u306f\u3060\u3044\u3076\u6e1b\u3063\u305f\u3051\u308c\u3069\u3001\u305d\u308c\u306b\u5bfe\u3057\u3066submission\uff08port 587\uff09\u3078\u306e\u653b\u6483\u304c\u6d6e\u304d\u4e0a\u304c\u3063\u3066\u304d\u305f\u3002<br \/>\n\u306a\u306e\u3067\u3053\u308c\u3078\u306e\u5bfe\u5fdc\u3092\u884c\u3046\u3053\u3068\u306b\u3059\u308b\u3002<br \/>\n<!--more--><\/p>\n<p>\u5148\u305a\u306f\u30ed\u30b0\u304b\u3089\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"postfix.log\">Jul 02 16:17:38 mail postfix\/smtpd[24906]: connect from unknown[128.1.49.46]\r\nJul 02 16:17:38 mail postfix\/smtpd[24906]: NOQUEUE: lost connection after EHLO from unknown[128.1.49.46]\r\nJul 02 16:17:38 mail postfix\/smtpd[24906]: disconnect from unknown[128.1.49.46] ehlo=1 auth=0\/1 commands=1\/2<\/pre>\n<p>\u305f\u3063\u305f3\u884c\u3060\u3051\u308c\u3069\u3082\u3001\u3053\u308c\u306fsmtp\uff08port 25\uff09\u3092\u901a\u3055\u305a\u306bsubmission\u3092\u53e9\u304d\u306b\u304d\u3066\u3044\u308b\u306e\u3088\u3002<br \/>\npostfix\/smtpd\u304cconnect from unknown[128.1.49.46]\u3068\u306dconnect\u3055\u308c\u3066\u3044\u308b\u306e\u304c\u305d\u306e\u7406\u7531\u3002<br \/>\n\u666e\u901a\u306f25\u756a\u306e\u62c5\u5f53postscreen\u304c\u3053\u306e\uff08connect from\uff09\u53cd\u5fdc\u3092\u793a\u3059\u306e\u3060\u308f\u3002<br \/>\n\u305d\u308c\u3067\u3001\u300c\u76f4\u63a5submission\u3092\u53e9\u304d\u306b\u304d\u3066\u3044\u308b\uff08\u3064\u307e\u308a\u306fpostscreen\u56de\u907f\uff09\u3057\u3066\u3044\u308b\u5974\u304c\u3044\u308b\u308f\u300d\u3068\u3001\u6c17\u304c\u4ed8\u3044\u305f\u3002<br \/>\n\u3053\u308c\u3060\u3068main.cf\u3067\u3044\u304f\u3089\u30c1\u30a7\u30c3\u30af\u3092\u5f37\u5316\u3057\u3066\u3082\u3001\u300c\u5358\u306bport\u304c\u958b\u3044\u3066\u3044\u308b\u304b\u306e\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3044\u308b\u3060\u3051\u300d\u3060\u304b\u3089\u3059\u3050\u306b\u5e30\u3063\u3061\u3083\u3046\u3002<br \/>\n\u3060\u304b\u3089\u3001submission\uff08smtpd\uff09\u304c\u8fd4\u4e8b\u3057\u3088\u3046\u3068\u3057\u3066\u300clost connection after EHLO\u300d\u306b\u306a\u308b\u3002<br \/>\n\u6700\u521d\u306b\u5411\u3053\u3046\u304b\u3089\u300cEHLO\u300d\u304c\u5c4a\u3044\u305f\u3051\u308c\u3069\u3001\u305d\u308c\u306b\u5fdc\u3048\u3088\u3046\u3068\u3057\u305f\u3089\u5207\u308c\u3066\u305f\u3088\u3002\u3063\u3066\u3053\u3068\u3002<br \/>\n\u305d\u308c\u3067\u3082\u3001\u304d\u3063\u3061\u308a\u3068\u300cdisconnect from unknown[128.1.49.46]\u300d\u3068\u5831\u544a\u3057\u3066\u3044\u308bsmtpd\u306f\u5065\u6c17\u3060\u306d\u3002<\/p>\n<p>\u3055\u3066\u3001\u3053\u308c\u3063\u3066\u30b5\u30fc\u30c1\u30e3\u30fc\u3068\u304b\u3063\u3066\u8a00\u3046\u306e\u304b\u306a\u3002<br \/>\nGemini\u3055\u3093\u306b\u805e\u3044\u305f\u3089\u300c\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30ca\u30fc\u300d\u3068\u304b\u5358\u306b\u300c\u30b9\u30ad\u30e3\u30ca\u30fc\u300d\u3068\u304b\u8a00\u3046\u305d\u3046\u3060\u3002<br \/>\n\u610f\u5473\u7684\u306b\u4f3c\u3066\u3044\u308b\u304b\u3089\u30b5\u30fc\u30c1\u30e3\u30fc\u3067\u3082\u53ef\u304b\u3082\u77e5\u308c\u306a\u3044\u3002<\/p>\n<p>\u9591\u8a71\u4f11\u984c\u3002<br \/>\n\u3053\u308c\u3063\u3066\u3001\u3044\u304f\u3089\u90aa\u9b54\u3067\u3082postfix\u306e\u74b0\u5883\u3092\u5f04\u3063\u3066\u3082\u6392\u9664\u3067\u304d\u306a\u3044\u3002<br \/>\n\u305d\u308a\u3083\u305d\u3046\u3060\u3088\u306d\u3001\u9580\u524d\u3067\u5e30\u3063\u3061\u3083\u3046\u3060\u3051\u3060\u3082\u306e\u3002<br \/>\n\u8a00\u3063\u3066\u307f\u308c\u3070\u300c\u9580\u306e\u524d\u3067\u306e\u8997\u304d\u898b\u91ce\u90ce\u300d\u3063\u3066\u3053\u3068\u3060\u308f\u3002<\/p>\n<p>\u305d\u3053\u3067Packet Filter\uff08PF\uff09\u306e\u51fa\u756a\u3067\u3059\u3002<br \/>\n\u3088\u3046\u3084\u304f\u30b3\u30b3\u307e\u3067\u6765\u305f\u3002<\/p>\n<p>\u3053\u3093\u306a\u30b3\u30fc\u30c9\u3092\u7d44\u3093\u3067\u307f\u305f\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"add_ip.sh\">#!\/bin\/sh\r\n#\r\n# postfix.log\u304b\u3089submission\u306b\u76f4\u63a5access\u304d\u305f\u5974\u3089\u3092pf\u306b\u767b\u9332\u3057\u3066\u66ab\u304f\u5f3e\u304f\r\n# \u9069\u5fdc\u3059\u308b\u6642\u671f\u306f\u6b21\u306epf\u3092\u66f4\u65b0\u3059\u308b\u307e\u3067\u306e1\u301c3\u65e5\u9593\r\n#\r\ngrep \"postfix\/smtpd\" \/opt\/local\/var\/log\/postfix\/postfix_log | grep \"connect from\" | grep -oE \"\\b([0-9]{1,3}\\.){3}[0-9]{1,3}\\b\" | sort -u | pfctl -t murus.blacklist -T add -f -<\/pre>\n<p>\u3053\u308c\u306fGemini\u3055\u3093\u3068\u306e\u5171\u540c\u5236\u4f5c\u3002<br \/>\n\u4eca\u56de\u306f\u79c1\u3082\u53c2\u52a0\u3057\u305f\u3002\uff08\u30db\u30f3\u30c8\u3060\u3088\uff1f<br \/>\n\u3053\u308c\u3060\u3068\u3001\u4e0a\u306e\u30ed\u30b01\u884c\u76ee\u306b\u53cd\u5fdc\u3059\u308b\u3002<br \/>\n\u898b\u3066\u308f\u304b\u308b\u901a\u308a\u3001\u6700\u521d\u306egrep\u3067smtpd\u3092\u62bd\u51fa\u3001\u4e8c\u756a\u76ee\u3067submission\u3092\u76f4\u63a5\u53e9\u304d\u306b\u6765\u305f\u8005\u3092\u62bd\u51fa\u3001\u4e09\u756a\u76ee\u306f\u610f\u5473\u304c\u5224\u3089\u306a\u3044Gemini\u3055\u3093\u4f5c\u306eip\u62bd\u51fa\u90e8\u5206\u3001\u56db\u756a\u76ee\u306esort\u304c\u91cd\u8907\u3092\u524a\u9664\u3002<br \/>\n\u305d\u3053\u307e\u3067\u3057\u305f\u3068\u3053\u308d\u3067pfctl\u306b\u8ffd\u52a0\u767b\u9332\u3057\u3066\u3044\u308b\u3002-T\u3067\u767b\u9332\u3055\u308c\u3066\u305f\u3082\u306e\u306f\u30b9\u30ad\u30c3\u30d7\u3059\u308b\u306e\u3060\u305d\u3046\u3060\u3002<br \/>\n\u5b9f\u969b2\u56de\u7e70\u308a\u8fd4\u3057\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8d70\u3089\u305b\u305f\u3089\u30012\u56de\u76ee\u306f0\u4ef6\u306e\u767b\u9332\u3067\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u304b\u3063\u305f\u3002<\/p>\n<p>\u3053\u308c\u306e\u30b3\u30e1\u30f3\u30c8\u306b\u300c\u9069\u5fdc\u3059\u308b\u6642\u671f\u306f\u6b21\u306epf\u3092\u66f4\u65b0\u3059\u308b\u307e\u3067\u306e1\u301c3\u65e5\u9593\u300d\u3068\u3042\u308b\u3002<br \/>\n\u3053\u3063\u3061\u3082\u66f8\u3044\u3066\u304a\u3053\u3046\u3068\u601d\u3046\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"resetIP.sh\">#!\/bin\/sh\r\n\r\ncd \/tmp\r\n\r\n# 1. \u30d6\u30ed\u30c3\u30af\u3057\u305f\u3044\u56fd\u540d\u30b3\u30fc\u30c9\uff08\u30b9\u30da\u30fc\u30b9\u533a\u5207\u308a\u3067\u4e26\u3079\u308b\u3060\u3051\uff01\uff09\r\nCOUNTRIES=\"cn kp kr ru nl sg fr de lu lt\"\r\n\r\n# 2. \u521d\u671f\u5316\u5f8c\u3001\u30eb\u30fc\u30d7\u3092\u56de\u3057\u3066\u3001\u4e00\u6483\u3067 Murus\uff08PF\uff09\u3078\u6d41\u3057\u8fbc\u307f\uff01\r\npfctl -t murus.blacklist -T flush\r\nfor COUNTRY in $COUNTRIES; do\r\n    curl -s \"https:\/\/www.ipdeny.com\/ipblocks\/data\/aggregated\/${COUNTRY}-aggregated.zone\" | pfctl -t murus.blacklist -T add -f -\r\ndone\r\n\r\n# 3. postfix.log\u304b\u3089submission\u306b\u76f4\u63a5access\u304d\u305f\u5974\u3089\u3092pf\u306b\u767b\u9332\u3057\u3066\u66ab\u304f\u5f3e\u304f\r\n\/usr\/local\/sbin\/add_pf.sh\r\n\r\n# 4. \u4eca\u56de\u66f8\u304d\u8fbc\u3093\u3060\u30d6\u30ed\u30c3\u30af\u6570\u3092\u30ed\u30b0\u306b\u66f8\u304d\u51fa\u3059\r\necho \"$(date) - Current blocklist count: $(sudo pfctl -t murus.blacklist -T show | wc -l)\" >> \/opt\/local\/var\/log\/pf\/pf_update_history.log<\/pre>\n<p>\u3053\u308c\u3082Gemini\u3055\u3093\u4f5c\u3002<br \/>\n\u79c1\u306b\u306fshell script\u306a\u3093\u305e\u7d44\u3081\u307e\u305b\u3093\u3002(^_^;;<br \/>\n\u3053\u308c\u3063\u3066\u3001www.ipdeny.com\u306b\u56fd\u5225\u3067\u767b\u9332\u3057\u3066\u3042\u308bip range\u306e\u4e00\u89a7\u3092\u5f15\u3063\u5f35\u3063\u3066\u304d\u3066\u3001pfctl\u306b\u6e21\u3057\u3066\u3044\u308b\u3060\u3051\u3002<br \/>\n\u6700\u521d\u306eflush\u3067\u30af\u30ea\u30a2\u3001\u305d\u306e\u5f8c\u3001\u8ffd\u52a0\u66f4\u65b0\u3063\u3066\u624b\u9806\u306b\u306a\u3063\u3066\u3044\u308b\u3002<br \/>\n\u3053\u308c\u306f\u4e2d\u56fd\u5acc\u3044\u3063\u3066\u5f3e\u3044\u305f\u3051\u308c\u3069\u3001\u4f8b\u3048\u3070\u300c\u4e2d\u56fd\u304c\u624b\u653e\u3057\u3066\u65e5\u672c\u306e\u6240\u6709\u306b\u306a\u3063\u3066\u3082\u30a2\u30af\u30bb\u30b9\u62d2\u5426\u306e\u307e\u307e\u300d\u3067\u3042\u308b\u3053\u3068\u3092\u56de\u907f\u3059\u308b\u305f\u3081\u3067\u3059\u306d\u3002<br \/>\n\u3053\u308c\u3092crontab\u30673\u65e5\u304a\u304d\u306b\u52d5\u304b\u3057\u3066\u3044\u308b\u304b\u3089\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"crontab\">#min\thour\tday\tmounth\tweekday\tcommand\r\n0\t5\t*\/3\t*\t*\t\/usr\/local\/sbin\/resetIP.sh >\/dev\/null 2>&1<\/pre>\n<p>\u3060\u304b\u3089\u3001\u4eca\u65e5\u767b\u9332\u3057\u3066\u3082\u6d88\u3048\u3061\u3083\u3046\u3088\u3063\u3066\u3053\u3068\u3002<br \/>\n\u3060\u3051\u3069\u3001resetIP.sh\u306e\u5f8c\u308d\u306b\u304f\u3063\u3064\u3051\u3061\u3083\u3063\u305f\u304b\u3089\u3001\u305d\u306e\u5f8c\u3082\u5f3e\u304d\u7d9a\u3051\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002<br \/>\n\u305d\u3046\u8a00\u3046\u7d4c\u7def\u304c\u3042\u308b\u3002<br \/>\n\u4f55\u6545\u4e00\u3064\u306b\u7e8f\u3081\u306a\u304b\u3063\u305f\u306e\u304b\u3001\u305d\u308c\u306f\u30ed\u30b0\u898b\u3066\u30a6\u30b6\u30a4\u3068\u601d\u3048\u3070\u305d\u306e\u5834\u3067add_pf.sh\u53e9\u3051\u3070\u826f\u3044\u306e\u3060\u3002\u305d\u306e\u5f8c\u51fa\u306a\u304f\u306a\u308b\u3002<br \/>\n<strong>resetIP.sh >\/dev\/null 2>&#038;1<\/strong>\u306e\u7406\u7531\u306f\u7c21\u5358\u3002pfctl\u304c\u7121\u8336\u558b\u308b\u304b\u3089\u90aa\u9b54\u306a\u3093\u3060\u308f\u3002<br \/>\n\u5b9f\u969b\u3001command line\u3067\u3064\u3051\u306a\u3044\u3067\u52d5\u304b\u3059\u3068\u5ef6\u3005\u51fa\u3066\u304f\u308b\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">No ALTQ support in kernel\r\nALTQ related functions disabled\r\n956\/956 addresses added.\r\npfctl: Use of -f option, could result in flushing of rules\r\npresent in the main ruleset added by the system at startup.\r\nSee \/etc\/pf.conf for further details.<\/pre>\n<p>\u3053\u3093\u306a\u306e\u304c\u767b\u9332\u3057\u56fd\u5206\u3060\u3051\u6d41\u308c\u7d9a\u3051\u308b\u3002<br \/>\n\u6b86\u3069\u304c\u4f59\u8a08\u306b\u304a\u4e16\u8a71\u306a\u30ef\u30fc\u30cb\u30f3\u30b0\u3002\u30a4\u30e4\u3060\u3088\u306d\u3053\u3093\u306a\u306e\u898b\u308b\u306e\u3002<br \/>\n\u3067\u7121\u304f\u3057\u3066\u3044\u308b\u3002<\/p>\n<p>\u3064\u307e\u308a\u3001postfix\u306esubmission\u306b\u76f4\u63a5\u30a2\u30bf\u30c3\u30af\u3057\u3066\u304f\u308b\u7121\u793c\u8005\u306f\u3001PF\u3067\u5143\u304b\u3089\u65ad\u3064\u3002<br \/>\n\u3063\u3066\u3084\u308a\u65b9\u3067\u5f37\u5316\u3057\u305f\u3063\u3066\u8a33\u3002<br \/>\n\u4eca\u56de\u306f\u3053\u306e\u8fba\u3067\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>postfix\u306esmtp\uff08port 25\uff09\u3078\u306e\u653b\u6483\u306f\u3060\u3044\u3076\u6e1b\u3063\u305f\u3051\u308c\u3069\u3001\u305d\u308c\u306b\u5bfe\u3057\u3066submission\uff08port 587\uff09\u3078\u306e\u653b\u6483\u304c\u6d6e\u304d\u4e0a\u304c\u3063\u3066\u304d\u305f\u3002 \u306a\u306e\u3067\u3053\u308c\u3078\u306e\u5bfe\u5fdc\u3092\u884c\u3046\u3053\u3068\u306b\u3059\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":[176,245,175],"class_list":["post-11295","post","type-post","status-publish","format-standard","hentry","category-my-macmini-server","category-software","tag-mail","tag-packet-filter","tag-postfix"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>postfix\u3092\u66f4\u306b\u5805\u7262\u306b - \u306b\u308f\u7ba1<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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