{"id":11192,"date":"2026-06-24T15:33:15","date_gmt":"2026-06-24T06:33:15","guid":{"rendered":"https:\/\/www.k-in.co.jp\/niwakan\/?p=11192"},"modified":"2026-07-06T11:34:44","modified_gmt":"2026-07-06T02:34:44","slug":"%e5%ae%9f%e3%81%af%e4%b8%8d%e5%ae%8c%e5%85%a8%e3%81%a0%e3%81%a3%e3%81%9fmail-server%ef%bc%88%e5%a4%b1%e6%95%97%e3%81%ae%e8%a8%98%e9%8c%b2%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/06\/11192\/","title":{"rendered":"\u5b9f\u306f\u4e0d\u5b8c\u5168\u3060\u3063\u305fMail server\uff08\u5931\u6557\u306e\u8a18\u9332\uff09"},"content":{"rendered":"<p>mail server\u3068\u3057\u3066\u306e\u8a2d\u5b9a\u306b\u30df\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u3002<br \/>\n\u305d\u308c\u3082\u81f4\u547d\u7684\u306a\u3082\u306e\u3067\u3059\u3002<br \/>\n\u306a\u3093\u3068\u8a3c\u660e\u66f8\u304c\u671f\u9650\u5207\u308c\u3067\u3057\u305f\u3002<br \/>\n<!--more--><\/p>\n<p>\u5009\u5eab\u306b\u65b0\u3057\u304f\u8cfc\u5165\u3057\u305f\u8a3c\u660e\u66f8\u30bb\u30c3\u30c8\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u305d\u308c\u306b\u5dee\u3057\u66ff\u3048\u307e\u3057\u305f\u3002\u3064\u307e\u308a\u5dee\u3057\u66ff\u3048\u3092\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u3093\u3067\u3059\u306d\u3002<br \/>\n\u5e8f\u3067\u306bdovecot\u306econf.d\/10-ssl.conf\u3068postfix\u306emain.cf\u306e\u8a3c\u660e\u66f8\u306epath\u3092\u4e00\u81f4\u3055\u305b\uff08\u4eca\u307e\u30672\u304b\u6240\u3067\u7ba1\u7406\u3057\u3066\u3044\u305f\u3001\u7406\u7531\u306f\u5224\u3089\u3093\uff09\u3066\u3001\u4e00\u3064\u306b\u7e8f\u3081\u7ba1\u7406\u3057\u6613\u3044\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<br \/>\n\u305d\u3057\u3066\u3001key\u3068cert\u306e\u30bb\u30c3\u30c8\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">sudo openssl x509 -noout -modulus -in \/opt\/local\/etc\/ssl\/certs\/server.crt | openssl md5\r\nsudo openssl rsa -noout -modulus -in \/opt\/local\/etc\/ssl\/private\/server.key | openssl md5<\/pre>\n<p>\u7d50\u679c\u306f<br \/>\nMD5(stdin)= 5f240b9153d4dd8595c32ea1ff47f9e3<br \/>\n\u3067\u4e00\u81f4\u3002\uff08\u4e00\u81f4\u3059\u308b\u3068\u6b63\u3057\u3044\u30da\u30a2\u3067\u3042\u308b\u3068\u8a3c\u660e\u3067\u304d\u308b\u3089\u3057\u3044\uff09<\/p>\n<p>\u7d9a\u3051\u3066openssl\u306b\u3088\u308b\u30b5\u30fc\u30d0\u30fc\u8a3c\u660e\u66f8\u304c\u6b63\u3057\u304f\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002<br \/>\npostfix\u306e\u8a3c\u660e\u66f8\u306e\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">openssl s_client -connect mail.k-in.co.jp:587 -starttls smtp | openssl x509 -noout -dates\r\nConnecting to 192.168.0.35\r\ndepth=2 C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46\r\nverify return:1\r\ndepth=1 C=JP, O=Nijimo, Inc., CN=FujiSSL RSA Domain Validation Secure Server CA 2\r\nverify return:1\r\ndepth=0 CN=mail.k-in.co.jp\r\nverify return:1\r\n250 CHUNKING\r\nnotBefore=Nov 28 00:00:00 2025 GMT\r\nnotAfter=Dec 29 23:59:59 2026 GMT<\/pre>\n<p>dovecot\u306e\u8a3c\u660e\u66f8\uff08\u540c\u3058\u3082\u306e\u3060\u3051\u308c\u3069\uff09\u306e\u78ba\u8a8d\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">openssl s_client -connect mail.k-in.co.jp:993 | openssl x509 -noout -dates\r\nConnecting to 192.168.0.35\r\ndepth=0 CN=mail.k-in.co.jp\r\nverify error:num=20:unable to get local issuer certificate\r\nverify return:1\r\ndepth=0 CN=mail.k-in.co.jp\r\nverify error:num=21:unable to verify the first certificate\r\nverify return:1\r\ndepth=0 CN=mail.k-in.co.jp\r\nverify return:1\r\nnotBefore=Nov 28 00:00:00 2025 GMT\r\nnotAfter=Dec 29 23:59:59 2026 GMT<\/pre>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">\r\n\r\ndovecot\u304c\u4e0a\u624b\u304fCA file\u3092\u8aad\u3081\u306a\u3044\u3088\u3046\u306a\u306e\u3067\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u306b\u3057\u305f\u3002\r\n\/opt\/local\/etc\/ssl\/certs\/\u5185\u306e\uff12\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u5408\u4f53\u3055\u305b\u308b\u3002\r\n<pre class=\"height:300 lang:default decode:true\" title=\"\">cat server.crt server-ca.crt | tee bundle.crt > \/dev\/null<\/pre>\n<p>\u3067\u3001\u3053\u308c\u3092cert\u3068\u3057\u3066\u8aad\u307f\u8fbc\u307f\u3001ca\u306f\u8aad\u307e\u306a\u3044\u3088\u3046\u306b\u5909\u66f4\u3002<br \/>\npostfix\u5074\u306f\u3053\u308c\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"postfix\/main.cf\">smtpd_tls_cert_file     = \/opt\/local\/etc\/ssl\/certs\/bundle.crt\r\n#smtpd_tls_CAfile       = \/opt\/local\/etc\/ssl\/certs\/server-ca.crt<\/pre>\n<p>dovecot\u5074\u306f\u3053\u3046\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"conf.d\/10-ssl.conf\">ssl_cert = <\/opt\/local\/etc\/ssl\/certs\/bundle.crt<\/pre>\n<p>postfix\u3001dovecot\u3092reload\u3059\u308b\u3002<br \/>\n\u305d\u306e\u7d50\u679c\u3001dovecot\u3082\u554f\u984c\u306a\u304f\u6b63\u5e38\u306a\u8fd4\u4e8b\u3092\u3088\u3053\u3057\u305f\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">openssl s_client -connect mail.k-in.co.jp:993 | openssl x509 -noout -dates\r\nConnecting to 192.168.0.35\r\ndepth=2 C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46\r\nverify return:1\r\ndepth=1 C=JP, O=Nijimo, Inc., CN=FujiSSL RSA Domain Validation Secure Server CA 2\r\nverify return:1\r\ndepth=0 CN=mail.k-in.co.jp\r\nverify return:1\r\nnotBefore=Nov 28 00:00:00 2025 GMT\r\nnotAfter=Dec 29 23:59:59 2026 GM<\/pre>\n<p>\u304a\u307e\u3051\u3067apache2\u306e\u8a3c\u660e\u66f8\u306e\u78ba\u8a8d\u3002<\/p>\n<pre class=\"height:300 lang:default decode:true\" title=\"\">openssl s_client -connect www.k-in.co.jp:443 | openssl x509 -noout -dates\r\nConnecting to 192.168.0.35\r\ndepth=2 C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46\r\nverify return:1\r\ndepth=1 C=JP, O=Nijimo, Inc., CN=FujiSSL RSA Domain Validation Secure Server CA 2\r\nverify return:1\r\ndepth=0 CN=www.k-in.co.jp\r\nverify return:1\r\nnotBefore=Nov 28 00:00:00 2025 GMT\r\nnotAfter=Dec 29 23:59:59 2026 GMT<\/pre>\n<p>\u4eca\u65e5\u306f\u3053\u3093\u306a\u3068\u3053\u308d\u3067\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>mail server\u3068\u3057\u3066\u306e\u8a2d\u5b9a\u306b\u30df\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u3002 \u305d\u308c\u3082\u81f4\u547d\u7684\u306a\u3082\u306e\u3067\u3059\u3002 \u306a\u3093\u3068\u8a3c\u660e\u66f8\u304c\u671f\u9650\u5207\u308c\u3067\u3057\u305f\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":[177,176,175,148],"class_list":["post-11192","post","type-post","status-publish","format-standard","hentry","category-my-macmini-server","category-software","tag-dovecot","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>\u5b9f\u306f\u4e0d\u5b8c\u5168\u3060\u3063\u305fMail server\uff08\u5931\u6557\u306e\u8a18\u9332\uff09 - \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\/11192\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5b9f\u306f\u4e0d\u5b8c\u5168\u3060\u3063\u305fMail server\uff08\u5931\u6557\u306e\u8a18\u9332\uff09 - \u306b\u308f\u7ba1\" \/>\n<meta property=\"og:description\" content=\"mail server\u3068\u3057\u3066\u306e\u8a2d\u5b9a\u306b\u30df\u30b9\u304c\u3042\u308a\u307e\u3057\u305f\u3002 \u305d\u308c\u3082\u81f4\u547d\u7684\u306a\u3082\u306e\u3067\u3059\u3002 \u306a\u3093\u3068\u8a3c\u660e\u66f8\u304c\u671f\u9650\u5207\u308c\u3067\u3057\u305f\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2026\/06\/11192\/\" \/>\n<meta property=\"og:site_name\" content=\"\u306b\u308f\u7ba1\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-24T06:33:15+00:00\" \/>\n<meta property=\"article:modified_time\" 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