{"id":10222,"date":"2025-03-06T15:25:10","date_gmt":"2025-03-06T06:25:10","guid":{"rendered":"https:\/\/www.k-in.co.jp\/niwakan\/?p=10222"},"modified":"2025-03-06T15:25:10","modified_gmt":"2025-03-06T06:25:10","slug":"mail-server%e3%81%ae%e7%a7%bb%e8%a1%8c%ef%bc%88%e3%81%9d%e3%81%ae50%ef%bc%89postfix%e3%80%81dovecot%e3%81%ae%e5%86%8d%e6%a7%8b%e7%af%89","status":"publish","type":"post","link":"https:\/\/www.k-in.co.jp\/niwakan\/archives\/2025\/03\/10222\/","title":{"rendered":"mail server\u306e\u79fb\u884c\uff08\u305d\u306e50\uff09Postfix\u3001Dovecot\u306e\u518d\u69cb\u7bc9"},"content":{"rendered":"

main.cf\u306bsmtpd_tls_security_level = encrypt<\/strong>\u3092\u8ffd\u52a0\u3057\u305f\u3002
\n\u305d\u3046\u3057\u305f\u3089\u3001\u666e\u901a\u306bport 25\u306b\u7e4b\u3044\u3067\u3082\u30b5\u30fc\u30d0\u30fc\u306e\u8a3c\u660e\u66f8\u304c\u767a\u884c\u3055\u308c\u305f\u3002
\n\u539f\u56e0\u306f\u5358\u306b1\u884c\u3092\u5165\u308c\u5fd8\u308c\u3066\u5c45\u305f\u3060\u3051\u306a\u306e\u304b\u2026\u2026\u3002
\n<\/p>\n

openssl\u3067\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3068\u3001\u666e\u901a\u306b\uff08\u30a8\u30e9\u30fc\u3092\u5410\u304b\u305a\u306b\uff09\u5165\u529b\u5f85\u3061\u3068\u306a\u3063\u305f\u3002
\nPostfix\u8a2d\u5b9a\u30d1\u30e9\u30e1\u30fc\u30bf<\/a>\u306e\u89e3\u8aac\u3067\u306f<\/p>\n

smtpd_tls_security_level (\u30c7\u30d5\u30a9\u30eb\u30c8: empty)<\/strong>
\nPostfix SMTP\u30b5\u30fc\u30d0\u3067\u306eSMTP TLS\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb; \u7a7a\u3067\u306f\u306a\u3044\u5024\u304c\u6307\u5b9a\u3055\u308c\u308b\u3068\u3001\u53e4\u3044 smtpd_use_tls \u3084 smtpd_enforce_tls \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3053\u308c\u3067\u4e0a\u66f8\u304d\u3057\u307e\u3059\u3002”smtpd_tls_wrappermode = yes” \u3068\u3059\u308b\u3068\u3001\u3053\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f \u7121\u8996\u3055\u308c\u307e\u3059\u3002
\n\u4ee5\u4e0b\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb\u306e\u3046\u30611\u3064\u3092\u6307\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044:
\nempty<\/strong>
\nTLS\u306f\u4f7f\u3044\u307e\u305b\u3093\u3002
\nmay<\/strong>
\n\u65e5\u548c\u898bTLS: STARTTLS\u30b5\u30dd\u30fc\u30c8\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u901a\u77e5\u306f\u3057\u307e\u3059\u304c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304cTLS\u6697\u53f7\u5316\u3092\u4f7f\u3046\u3053\u3068\u306f\u8981\u6c42\u3057\u307e\u305b\u3093\u3002
\nencrypt<\/strong>
\n\u5f37\u5236TLS\u6697\u53f7\u5316: SMTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306bSTARTTLS\u30b5\u30dd\u30fc\u30c8\u3092\u901a\u77e5\u3057\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c TLS\u6697\u53f7\u5316\u3092\u4f7f\u3046\u3053\u3068\u3092\u8981\u6c42\u3057\u307e\u3059\u3002RFC 2487 \u306b\u3088\u308a\u3001\u3053\u308c\u306f\u516c\u306b\u53c2\u7167\u3055\u308c\u308bSMTP\u30b5\u30fc\u30d0\u306e\u5834\u5408\u306b\u306f\u9069\u7528\u3057\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002\u3053\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u306f\u5c02\u7528\u30b5\u30fc\u30d0\u4e0a\u3067\u306e\u307f\u4f7f\u3046\u3079\u304d\u3067\u3059\u3002<\/div>\n

\u3046\u3093\u3002
\n\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u306a\u3063\u3066\u5c45\u305f\u306e\u3067\u3001TLS\u306f\u6271\u308f\u306a\u3044\u306e\u3067\u3057\u305f\u3002
\n\u305d\u308a\u3083\u7121\u7406\u3060\u308f\u3002<\/p>\n

\u3088\u3057\u3063\u3001\u3053\u308c\u3067\u793e\u5185\u306e\u30e1\u30fc\u30eb\u306e\u9063\u308a\u53d6\u308a\u304c\u51fa\u6765\u308b\uff01<\/p>\n

\u3068\u601d\u3063\u305f\u6642\u671f\u3082\u5728\u308a\u307e\u3057\u305f\u3002\uff08\u6d99\uff09<\/p>\n

\u4f55\u6545\u3060\u304b\u3001Mac\u306e\u30e1\u30fc\u30eb\u30a2\u30d7\u30ea\u3060\u3068\u9001\u4fe1\u3067\u304d\u306a\u3044\u3002\uff08\u53d7\u4fe1\u306f\u3067\u304d\u308b\uff09
\n\u30b5\u30fc\u30d0\u30fc\u306e\u78ba\u8a8d\u306f\u51fa\u6765\u3066\u3044\u308b\u306e\u306b\u306a\u3041\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

main.cf\u306bsmtpd_tls_security_level = encrypt\u3092\u8ffd\u52a0\u3057\u305f\u3002 \u305d\u3046\u3057\u305f\u3089\u3001\u666e\u901a\u306bport 25\u306b\u7e4b\u3044\u3067\u3082\u30b5\u30fc\u30d0\u30fc\u306e\u8a3c\u660e\u66f8\u304c\u767a\u884c\u3055\u308c\u305f\u3002 \u539f\u56e0\u306f\u5358\u306b1\u884c\u3092\u5165\u308c\u5fd8\u308c\u3066\u5c45\u305f\u3060\u3051\u306a\u306e\u304b\u2026\u2026\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","footnotes":""},"categories":[115],"tags":[176,175,148],"class_list":["post-10222","post","type-post","status-publish","format-standard","hentry","category-software","tag-mail","tag-postfix","tag-server"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/posts\/10222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/comments?post=10222"}],"version-history":[{"count":0,"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/posts\/10222\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/media?parent=10222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/categories?post=10222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.k-in.co.jp\/niwakan\/wp-json\/wp\/v2\/tags?post=10222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}