{"id":3000,"date":"2025-09-11T22:57:55","date_gmt":"2025-09-11T13:57:55","guid":{"rendered":"https:\/\/blog.id774.net\/entry\/?p=3000"},"modified":"2025-11-02T22:55:09","modified_gmt":"2025-11-02T13:55:09","slug":"%e3%83%a1%e3%83%bc%e3%83%ab%e9%85%8d%e9%80%81%e3%83%88%e3%83%a9%e3%83%96%e3%83%ab%e3%81%ae%e7%b5%8c%e7%b7%af%e3%81%a8%e5%af%be%e5%87%a6%e3%81%ae%e8%a8%98%e9%8c%b2","status":"publish","type":"post","link":"https:\/\/blog.id774.net\/entry\/2025\/09\/11\/3000\/","title":{"rendered":"\u30e1\u30fc\u30eb\u914d\u9001\u30c8\u30e9\u30d6\u30eb\u306e\u7d4c\u7def\u3068\u5bfe\u51e6\u306e\u8a18\u9332"},"content":{"rendered":"<h2>\u8981\u65e8<\/h2>\n<p>\n<a href=\"https:\/\/blog.id774.net\/entry\/2025\/08\/31\/2974\/\">\u672c\u756a\u30b5\u30fc\u30d0\u30fc<\/a>\u304b\u3089\u5916\u90e8\u5b9b\u3066\u30e1\u30fc\u30eb\u306e\u5230\u9054\u6027\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u3063\u305f\u3002\u8868\u9762\u7684\u306b\u306f\u914d\u9001\u30ed\u30b0\u304c status=sent \u3092\u8fd4\u3057\u3066\u3044\u305f\u304c\u3001\u53d7\u4fe1\u5074\u3067\u306e\u6271\u3044\u304c\u4e0d\u5b89\u5b9a\u3067\u4e00\u90e8\u4e0d\u9054\u3082\u89b3\u6e2c\u3002\u539f\u56e0\u306f\u3001<strong>\u540d\u4e57\u308a\uff08HELO\/EHLO\uff09\u3068\u9006\u5f15\u304d\uff08PTR\uff09\u306e\u4e0d\u6574\u5408<\/strong>\u304a\u3088\u3073<strong>IPv6 \u63a5\u7d9a\u5931\u6557\u306e\u9023\u767a<\/strong>\u304c\u91cd\u306a\u308a\u3001<a href=\"https:\/\/check.spamhaus.org\/\">\u7b2c\u4e09\u8005<\/a>\u306e<a href=\"https:\/\/check.spamhaus.org\/faqs\/general-definitions\/#what-is-a-blocklist\">\u30b9\u30d1\u30e0\u5bfe\u7b56\u30ea\u30b9\u30c8<\/a>\uff08\u4ee5\u4e0b\u300c\u7b2c\u4e09\u8005\u30ea\u30b9\u30c8\u300d\uff09\u306e <a href=\"https:\/\/check.spamhaus.org\/faqs\/combined-spam-sources-css\/\">CSS<\/a> \u306b\u4e00\u6642\u767b\u9332\u3055\u308c\u305f\u3053\u3068\u3067\u3042\u308b\u3002\u8a2d\u5b9a\u306e\u662f\u6b63\u3068\u76e3\u8996\u5f37\u5316\u306b\u3088\u308a\u89e3\u6c7a\u3057\u305f\u3002\n<\/p>\n<hr>\n<h2>\u80cc\u666f<\/h2>\n<p>\n\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u901a\u77e5\u30fb\u30ec\u30dd\u30fc\u30c8\u30e1\u30fc\u30eb\u304c\u5c4a\u304b\u306a\u3044\u3068\u306e\u5831\u544a\u3002\u5bfe\u7167\u3068\u3057\u3066\u3001\u958b\u767a\u30b5\u30fc\u30d0\u30fc\u306f\u540c\u69d8\u306e\u5b9b\u5148\u3078\u554f\u984c\u306a\u304f\u914d\u4fe1\u3067\u304d\u3066\u3044\u305f\u3002\u914d\u9001\u30ed\u30b0\u306b\u306f\u6210\u529f\u304c\u8a18\u9332\u3055\u308c\u3066\u3044\u308b\u4e00\u65b9\u3067\u3001\u5230\u9054\u6027\u306b\u5dee\u304c\u3042\u308b\u70b9\u304c\u7570\u5e38\u306e\u30b5\u30a4\u30f3\u3067\u3042\u308b\u3002\n<\/p>\n<div class=\"callout\">\n<strong>\u89b3\u6e2c\u3055\u308c\u305f\u75c7\u72b6<\/strong><\/p>\n<ul class=\"tight\">\n<li>\u30ed\u30b0\u4e0a\u306f status=sent \u3060\u304c\u3001\u5b9f\u969b\u306b\u306f\u53d7\u4fe1\u5074\u3067\u8ff7\u60d1\u6271\u3044\/\u9045\u5ef6\/\u7a00\u306b\u4e0d\u9054<\/li>\n<li>IPv6 \u5b9b\u3066\u63a5\u7d9a\u304c Cannot assign requested address \u3067\u983b\u767a\u3057\u3001\u305d\u306e\u5f8c IPv4 \u3078\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af<\/li>\n<\/ul>\n<\/div>\n<hr>\n<h2>\u306a\u305c\u554f\u984c\u304c\u62e1\u5927\u3057\u305f\u306e\u304b\uff08\u7b2c\u4e09\u8005\u30ea\u30b9\u30c8\u306e\u5f71\u97ff\uff09<\/h2>\n<p>\n\u53d7\u4fe1\u5074\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306f\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u306e\u30d6\u30ed\u30c3\u30af\u30ea\u30b9\u30c8\u3092\u53c2\u7167\u3057\u3066\u9001\u4fe1\u5143\u306e\u4fe1\u7528\u5ea6\u3092\u5224\u5b9a\u3059\u308b\u3002CSS \u3078\u306e\u4e00\u6642\u767b\u9332\u306f\u3001\u5373\u5ea7\u306e\u5168\u9762\u62d2\u5426\u3067\u306f\u306a\u3044\u3082\u306e\u306e\u3001<strong>\u30b9\u30b3\u30a2\u30ea\u30f3\u30b0\u60aa\u5316\u30fb\u9045\u5ef6\u30fb\u8ff7\u60d1\u632f\u308a\u5206\u3051<\/strong>\u3092\u8a98\u767a\u3059\u308b\u3002\u7d50\u679c\u3068\u3057\u3066\u300c\u9001\u3063\u305f\u306e\u306b\u5c4a\u304b\u306a\u3044\/\u9045\u3044\u300d\u3068\u3044\u3046\u5229\u7528\u8005\u4f53\u9a13\u306b\u76f4\u7d50\u3059\u308b\u3002\n<\/p>\n<hr>\n<h2>\u8abf\u67fb\uff08\u6280\u8853\u7684\u8981\u56e0\u306e\u5207\u308a\u5206\u3051\uff09<\/h2>\n<ol>\n<li><strong>\u8b58\u5225\u60c5\u5831\u306e\u4e0d\u6574\u5408<\/strong>\uff1a\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306e myhostname \u304c\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u307e\u307e\u3067\u3001\u30b5\u30fc\u30d0\u30fc\u540d\u3068\u4e00\u81f4\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u3002\u2192 HELO\/EHLO \u3068 PTR \u306e\u4e0d\u4e00\u81f4\u306f\u5230\u9054\u6027\u3092\u5927\u304d\u304f\u4e0b\u3052\u308b\u3002<\/li>\n<li><strong>\u9006\u5f15\u304d\u8a2d\u5b9a\u306e\u4e0d\u5099<\/strong>\uff1a\u9006\u5f15\u304d\uff08PTR\uff09\u304c\u5b9f\u30db\u30b9\u30c8\u540d\u3068\u5408\u81f4\u305b\u305a\u3001<abbr title=\"Forward-confirmed reverse DNS\">FCrDNS<\/abbr> \u304c\u6210\u7acb\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u3002<\/li>\n<li><strong>IPv6 \u306e\u5931\u6557\u9023\u767a<\/strong>\uff1aIPv6 \u30a2\u30c9\u30ec\u30b9\u3067\u306e\u63a5\u7d9a\u8a66\u884c\u304c\u5931\u6557\u3057\u7d9a\u3051\u3001\u77ed\u6642\u9593\u306b\u518d\u8a66\u884c\u3092\u91cd\u306d\u308b\u6319\u52d5\u304c\u89b3\u6e2c\u3055\u308c\u305f\u3002\u6a5f\u68b0\u7684\u306b\u306f\u300c\u602a\u3057\u3044\u300d\u30d1\u30bf\u30fc\u30f3\u306b\u898b\u3048\u308b\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u8005\u30ea\u30b9\u30c8\u306e\u78ba\u8a8d<\/strong>\uff1aCSS \u306b\u4e00\u6642\u767b\u9332\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3002\u89e3\u9664\u7533\u8acb\u306e\u8981\u5426\u3092\u5224\u65ad\u3002<\/li>\n<\/ol>\n<hr>\n<h2>\u5bfe\u51e6\uff08\u8a2d\u5b9a\u306e\u662f\u6b63\u3068\u7533\u8acb\uff09<\/h2>\n<h3>1) \u540d\u4e57\u308a\u306e\u7d71\u4e00<\/h3>\n<p>\n\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e myhostname \u3092\u5b9f\u30db\u30b9\u30c8\u540d\u306b\u4fee\u6b63\u3002\u5916\u5411\u3051\u306e HELO\/EHLO \u304c FQDN \u3068\u306a\u308b\u3088\u3046\u306b\u7d71\u4e00\u3057\u305f\u3002\n<\/p>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \u4f8b\uff08\u62bd\u8c61\u5316\u8868\u8a18\uff09<br \/>\n# \/etc\/postfix\/main.cf<br \/>\nmyhostname = \uff08\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306eFQDN\uff09<br \/>\nsmtp_helo_name = \uff08\u5fc5\u8981\u306a\u3089\u660e\u793a\u3002\u672a\u6307\u5b9a\u306a\u3089 myhostname \u3092\u4f7f\u7528\uff09<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<h3>2) \u9006\u5f15\u304d\uff08PTR\uff09\u306e\u4fee\u6b63<\/h3>\n<p>\n\u30c9\u30e1\u30a4\u30f3\u306e DNS \u7ba1\u7406\u753b\u9762\u3067\u3001\u9001\u4fe1\u5143IP\u306b\u5bfe\u3059\u308b PTR \u3092\u5b9f\u30db\u30b9\u30c8\u540d\u3078\u4fee\u6b63\u3057\u3001\u6b63\u5f15\u304d\u3068\u5f80\u5fa9\u3067\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u3057\u305f\uff08FCrDNS \u3092\u6210\u7acb\uff09\u3002\n<\/p>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \u691c\u8a3c\u30b3\u30de\u30f3\u30c9\u4f8b<br \/>\ndig -x \uff08\u9001\u4fe1\u5143IP\uff09 +short &nbsp; &nbsp; &nbsp; # \u9006\u5f15\u304d \u2192 \u5b9f\u30db\u30b9\u30c8\u540d.<br \/>\ndig \uff08\u5b9f\u30db\u30b9\u30c8\u540d\uff09 +short &nbsp; &nbsp; &nbsp; &nbsp;# \u6b63\u5f15\u304d \u2192 \u540c\u3058\u9001\u4fe1\u5143IP<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<h3>3) IPv6 \u306e\u6271\u3044\u3092\u898b\u76f4\u3057<\/h3>\n<p>\n\u904b\u7528\u4e0a IPv6 \u304c\u5fc5\u9808\u3067\u306f\u306a\u304b\u3063\u305f\u305f\u3081\u3001\u30b9\u30bf\u30c3\u30af\u3092 IPv4 \u306e\u307f\u3078\u9650\u5b9a\u3002\u5931\u6557\u30ed\u30b0\u306e\u9023\u767a\u3092\u6b62\u3081\u3001\u602a\u3057\u3044\u6319\u52d5\u306e\u30b7\u30b0\u30ca\u30eb\u3092\u6d88\u3057\u305f\u3002\n<\/p>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \/etc\/postfix\/main.cf<br \/>\ninet_protocols = ipv4<br \/>\n# \u53cd\u6620<br \/>\npostfix reload<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<h3>4) \u8a8d\u8a3c\u30ec\u30b3\u30fc\u30c9\u306e\u6574\u5099<\/h3>\n<ul>\n<li><strong>SPF<\/strong>\uff1a\u9001\u4fe1\u5143IP\u3092\u6b63\u78ba\u306b\u5217\u6319\u6e08\u307f\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3002<\/li>\n<li><strong>DMARC<\/strong>\uff1a\u76e3\u8996\u30e2\u30fc\u30c9\uff08p=none\uff09\u3067\u5c0e\u5165\u3002rua \u306f\u53d7\u4fe1\u53ef\u80fd\u306a\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3001\u65e5\u6b21\u306e\u96c6\u8a08\u30ec\u30dd\u30fc\u30c8\u3092\u53d6\u5f97\u3002<\/li>\n<li><strong>DKIM<\/strong>\uff1a\u6b21\u6bb5\u3067\u5c0e\u5165\u4e88\u5b9a\uff08\u9375\u767a\u884c\u2192\u516c\u958b\u9375\u3092 DNS \u306b\u63b2\u8f09\u2192\u7f72\u540d\u4ed8\u4e0e\u2192\u691c\u8a3c\uff09\u3002<\/li>\n<\/ul>\n<h3>5) \u89e3\u9664\u7533\u8acb<\/h3>\n<p>\n\u7b2c\u4e09\u8005\u30ea\u30b9\u30c8\u306e<a href=\"https:\/\/contact-center.spamhaus.org\/\">\u7a93\u53e3<\/a>\u306b\u5bfe\u3057\u3001\u4ee5\u4e0b\u306e\u8981\u70b9\u3067\u7533\u8acb\uff1a<br \/>\n\u300c\u56fa\u5b9aIP\u3067\u3042\u308b\u300d\u300c\u540d\u4e57\u308a\u3068\u9006\u5f15\u304d\u3092\u662f\u6b63\u3057\u305f\u300d\u300c\u30b9\u30d1\u30e0\u9001\u4fe1\u306f\u3057\u3066\u3044\u306a\u3044\u300d\u3002<br \/>\n\u305d\u306e\u5f8c\u3001\u767b\u9332\u89e3\u9664\uff08\u53cd\u6620\u306b\u306f\u6642\u9593\u5dee\u3042\u308a\uff09\u3092\u78ba\u8a8d\u3002\n<\/p>\n<hr>\n<h2>\u691c\u8a3c\uff08\u914d\u9001\u54c1\u8cea\u306e\u518d\u78ba\u8a8d\uff09<\/h2>\n<ul>\n<li>\u914d\u9001\u30ed\u30b0\u306f\u4e00\u8cab\u3057\u3066 status=sent\u3002\u9045\u5ef6\u304c\u7a00\u306b\u898b\u3089\u308c\u3066\u3082\u3001\u76f8\u624b\u5074\u306e\u51e6\u7406\u5f85\u3061\u3067\u8aac\u660e\u53ef\u80fd\u3002<\/li>\n<li>\u9006\u5f15\u304d\u30fb\u6b63\u5f15\u304d\u30fbHELO \u306e\u4e09\u70b9\u304c\u6574\u5408\u3057\u3001\u5916\u5f62\u7684\u306a\u4fe1\u983c\u6027\u304c\u56de\u5fa9\u3002<\/li>\n<li>DMARC \u30ec\u30dd\u30fc\u30c8\u3067\u7b2c\u4e09\u8005\u304b\u3089\u898b\u305f\u5224\u5b9a\u50be\u5411\u3092\u53ef\u8996\u5316\u3002<\/li>\n<\/ul>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \u4ee3\u8868\u7684\u306a\u78ba\u8a8d\u624b\u9806<br \/>\nmailq &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; # \u30ad\u30e5\u30fc\u6ede\u7559\u306e\u6709\u7121<br \/>\ngrep 'postfix\/smtp' \/var\/log\/postfix.log | tail -n 100<br \/>\ndig +short TXT _dmarc.\uff08\u30c9\u30e1\u30a4\u30f3\uff09<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<hr>\n<h2>\u5f97\u3089\u308c\u305f\u6559\u8a13<\/h2>\n<ol>\n<li><strong>\u30a2\u30a4\u30c7\u30f3\u30c6\u30a3\u30c6\u30a3\u306e\u4e00\u8cab\u6027\u306f\u6700\u512a\u5148<\/strong>\uff1aHELO\/EHLO\u30fbPTR\u30fb\u6b63\u5f15\u304d\u306e\u6574\u5408\u304c\u5d29\u308c\u308b\u3068\u3001\u5185\u5bb9\u306b\u554f\u984c\u304c\u306a\u304f\u3066\u3082\u5230\u9054\u6027\u306f\u843d\u3061\u308b\u3002<\/li>\n<li><strong>\u4e0d\u8981\u306aIPv6\u3092\u7121\u7406\u306b\u4f7f\u308f\u306a\u3044<\/strong>\uff1a\u30b9\u30bf\u30c3\u30af\u306e\u4e0d\u5b89\u5b9a\u3055\u306f\u300c\u602a\u3057\u3044\u6319\u52d5\u300d\u3068\u898b\u306a\u3055\u308c\u308b\u3002\u4f7f\u3046\u306a\u3089\u5f80\u6765\u306e\u758e\u901a\u3092\u78ba\u5b9f\u306b\u3002<\/li>\n<li><strong>25\u756a\u306f\u30b5\u30fc\u30d0\u30fc\u9593\u914d\u9001\u5c02\u7528<\/strong>\uff1a\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306f 587\/465 + SMTP-AUTH\u3002\u51fa\u53e3\u30fb\u5165\u53e3\u3068\u3082\u306b\u6700\u5c0f\u5316\u3059\u308b\u3002<\/li>\n<li><strong>\u53ef\u89b3\u6e2c\u6027\u3092\u6301\u3064<\/strong>\uff1aDMARC \u30ec\u30dd\u30fc\u30c8\u3001\u30ed\u30b0\u76e3\u8996\u3001\u30ad\u30e5\u30fc\u76e3\u8996\u3067\u65e9\u671f\u306b\u7570\u5e38\u3092\u691c\u77e5\u3059\u308b\u3002<\/li>\n<li><strong>\u6bb5\u968e\u7684\u306a\u5f37\u5316<\/strong>\uff1aSPF \u2192 DKIM \u2192 DMARC\uff08none\u2192quarantine\u2192reject\uff09\u3068\u6bb5\u968e\u3092\u8e0f\u3080\u3002<\/li>\n<\/ol>\n<hr>\n<h2>\u904b\u7528\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff08\u629c\u7c8b\uff09<\/h2>\n<ul>\n<li>\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306e myhostname \u306f\u5b9f\u30db\u30b9\u30c8\u540d\u304b<\/li>\n<li>\u9006\u5f15\u304d\uff08PTR\uff09\u21c4 \u6b63\u5f15\u304d\u3067 FCrDNS \u304c\u6210\u7acb\u3057\u3066\u3044\u308b\u304b<\/li>\n<li>HELO\/EHLO \u306f FQDN \u304b\uff08\u30c9\u30e1\u30a4\u30f3\u76f4\u66f8\u304d\u3084\u77ed\u7e2e\u540d\u306f\u4e0d\u53ef\uff09<\/li>\n<li>25\u756a\u306e\u5165\u53e3\u30fb\u51fa\u53e3\u306f\u30b5\u30fc\u30d0\u30fc\u7528\u9014\u306b\u9650\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<li>SPF \u304c\u9001\u4fe1\u5b9f\u614b\u306b\u5408\u3063\u3066\u3044\u308b\u304b\uff08\u6f0f\u308c\u30fb\u904e\u5270\u6307\u5b9a\u306b\u6ce8\u610f\uff09<\/li>\n<li>DMARC \u306f\u5c0e\u5165\u6e08\u307f\u304b\uff08\u307e\u305a\u306f p=none \u3067\u76e3\u8996\uff09<\/li>\n<li>DKIM \u5c0e\u5165\u8a08\u753b\u306f\u3042\u308b\u304b\uff08\u9375\u306e\u4fdd\u5b88\u30fb\u30ed\u30fc\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u524d\u63d0\u306b\uff09<\/li>\n<\/ul>\n<hr>\n<h2>\u4ed8\u9332\uff1a\u8a2d\u5b9a\u3068\u30b3\u30de\u30f3\u30c9\u4f8b\uff08\u62bd\u8c61\u5316\uff09<\/h2>\n<h3>Postfix\uff08\u629c\u7c8b\uff09<\/h3>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/>5<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \/etc\/postfix\/main.cf<br \/>\nmyhostname = \uff08\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306eFQDN\uff09<br \/>\ninet_protocols = ipv4<br \/>\nsmtpd_tls_security_level = may<br \/>\nsmtp_tls_security_level &nbsp;= may<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<h3>DNS\uff08\u629c\u7c8b\uff09<\/h3>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/>5<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># SPF\uff08\u30c9\u30e1\u30a4\u30f3\u914d\u4e0b\uff09<br \/>\n\uff08\u30c9\u30e1\u30a4\u30f3\uff09 IN TXT &quot;v=spf1 ip4:\uff08\u9001\u4fe1\u5143IP\uff09 include:\uff08\u5fc5\u8981\u306a\u3089\uff09 ~all&quot;<br \/>\n<br \/>\n# DMARC\uff08_dmarc.\u30c9\u30e1\u30a4\u30f3\uff09<br \/>\n_dmarc.\uff08\u30c9\u30e1\u30a4\u30f3\uff09 IN TXT &quot;v=DMARC1; p=none; rua=mailto:\uff08\u53d7\u4fe1\u53ef\u80fd\u306a\u30a2\u30c9\u30ec\u30b9\uff09&quot;<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<h3>\u52d5\u4f5c\u30c6\u30b9\u30c8<\/h3>\n<div class=\"codecolorer-container text geshi\" style=\"overflow:auto;white-space:nowrap;width:1000px;\"><table cellspacing=\"0\" cellpadding=\"0\"><tbody><tr><td class=\"line-numbers\"><div>1<br \/>2<br \/>3<br \/>4<br \/>5<br \/><\/div><\/td><td><div class=\"text codecolorer\" style=\"white-space:nowrap\"># \u540d\u4e57\u308a\u306e\u78ba\u8a8d\uff08\u5bfe\u5916MTA\u5411\u3051\uff09<br \/>\nswaks --from you@\uff08\u30c9\u30e1\u30a4\u30f3\uff09 --to you@\uff08\u30c6\u30b9\u30c8\u5b9b\u5148\uff09 &nbsp; --server \uff08\u76f8\u624bMTA\uff09:25 --ehlo \uff08\u672c\u756a\u30b5\u30fc\u30d0\u30fc\u306eFQDN\uff09<br \/>\n<br \/>\n# RBL\u306e\u53c2\u7167\u6319\u52d5\uff08\u7a7a\u306a\u3089\u672a\u767b\u9332\uff09<br \/>\ndig +short \uff08\u9006\u9806IP\uff09.zen.spamhaus.org @8.8.8.8<\/div><\/td><\/tr><\/tbody><\/table><\/div>\n<hr>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\n\u914d\u9001\u54c1\u8cea\u306f\u300c\u30b3\u30f3\u30c6\u30f3\u30c4\u300d\u4ee5\u524d\u306b\u300c\u5916\u5f62\u306e\u4fe1\u7528\u300d\u3067\u5927\u304d\u304f\u5de6\u53f3\u3055\u308c\u308b\u3002\u30b5\u30fc\u30d0\u30fc\u306e\u540d\u4e57\u308a\u30fb\u9006\u5f15\u304d\u30fb\u30d7\u30ed\u30c8\u30b3\u30eb\u6319\u52d5\u3092\u6b63\u3057\u304f\u6574\u3048\u308b\u3053\u3068\u304c\u3001\u6700\u77ed\u306e\u5230\u9054\u6027\u6539\u5584\u3067\u3042\u308b\u3002\u4eca\u56de\u306f\u57fa\u672c\u306b\u7acb\u3061\u8fd4\u3063\u3066\u6574\u5099\u3057\u305f\u7d50\u679c\u3001\u7b2c\u4e09\u8005\u30ea\u30b9\u30c8\u304b\u3089\u306e\u89e3\u9664\u3068\u5b89\u5b9a\u914d\u4fe1\u3092\u53d6\u308a\u623b\u3057\u305f\u3002\u6b21\u306f DKIM \u3092\u5c0e\u5165\u3057\u3001DMARC \u306e\u30dd\u30ea\u30b7\u30fc\u3092\u6bb5\u968e\u7684\u306b\u5f37\u3081\u3066\u3044\u304f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8981\u65e8 \u672c\u756a\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u5916\u90e8\u5b9b\u3066\u30e1\u30fc\u30eb\u306e\u5230\u9054\u6027\u304c\u4e0d\u5b89\u5b9a\u306b\u306a\u3063\u305f\u3002\u8868\u9762\u7684\u306b\u306f\u914d\u9001\u30ed\u30b0\u304c status=sent \u3092\u8fd4\u3057\u3066\u3044\u305f\u304c\u3001\u53d7\u4fe1\u5074\u3067\u306e\u6271\u3044\u304c\u4e0d\u5b89\u5b9a\u3067\u4e00\u90e8\u4e0d\u9054\u3082\u89b3\u6e2c\u3002\u539f\u56e0\u306f\u3001\u540d\u4e57\u308a\uff08HELO\/EHLO\uff09\u3068\u9006\u5f15\u304d\uff08PTR\uff09\u306e &#8230; <a title=\"\u30e1\u30fc\u30eb\u914d\u9001\u30c8\u30e9\u30d6\u30eb\u306e\u7d4c\u7def\u3068\u5bfe\u51e6\u306e\u8a18\u9332\" class=\"read-more\" href=\"https:\/\/blog.id774.net\/entry\/2025\/09\/11\/3000\/\" aria-label=\"\u30e1\u30fc\u30eb\u914d\u9001\u30c8\u30e9\u30d6\u30eb\u306e\u7d4c\u7def\u3068\u5bfe\u51e6\u306e\u8a18\u9332 \u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8aad\u3080\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,14],"tags":[],"class_list":["post-3000","post","type-post","status-publish","format-standard","hentry","category-diary","category-tech"],"_links":{"self":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/3000","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/comments?post=3000"}],"version-history":[{"count":1,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/3000\/revisions"}],"predecessor-version":[{"id":3026,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/posts\/3000\/revisions\/3026"}],"wp:attachment":[{"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/media?parent=3000"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/categories?post=3000"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.id774.net\/entry\/wp-json\/wp\/v2\/tags?post=3000"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}