{"id":126,"date":"2026-02-25T23:51:32","date_gmt":"2026-02-25T22:51:32","guid":{"rendered":"https:\/\/smarthome.bolte.name\/?p=126"},"modified":"2026-02-26T20:27:33","modified_gmt":"2026-02-26T19:27:33","slug":"mail-an-gmail-scheitert-von-strato-vps","status":"publish","type":"post","link":"https:\/\/smarthome.bolte.name\/?p=126","title":{"rendered":"Mail an gmail scheitert von Strato VPS"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Das Problem<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Gmail lehnt die Mails ab mit folgendem Fehler:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">(...) our email has been blocked because the sender is<br>unauthenticated. 550-5.7.26 <br>Gmail requires all senders to authenticate with<br>either SPF or DKIM. 550-5.7.26  550-5.7.26  <br>Authentication results:<br>    550-5.7.26  DKIM = did not pass <br>    550-5.7.26  SPF (...) did not pass (...)<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Sender Policy Framework (SPF)<\/h2>\n\n\n\n<h5 class=\"wp-block-heading\">DNS-Eintr\u00e4ge checken: <a href=\"https:\/\/mxtoolbox.com\/SuperTool.aspx\" type=\"link\" id=\"https:\/\/mxtoolbox.com\/SuperTool.aspx\">https:\/\/mxtoolbox.com\/SuperTool.aspx<\/a><\/h5>\n\n\n\n<h2 class=\"wp-block-heading\">Optionen im STRATO Kunden-Login<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Keine STRATO SPF-Regel <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">FAIL &#8211; Mailserver laut MX Eintrag der Domain\/Subdomain <\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>v=spf1 mx -all<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Weise die E-Mail strikt ab.<\/li>\n\n\n\n<li>Hohe Sicherheit<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">SOFTFAIL &#8211; Mailserver laut MX Eintrag der Domain\/Subdomain<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>v=spf1 mx ~all<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lass die Mail evtl. mit Markierung durch<\/li>\n\n\n\n<li>Moderate Sicherheit<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">SPF Eintrag h\u00e4ndisch anlegen<\/h2>\n\n\n\n<pre class=\"wp-block-preformatted\">v=spf1 ip4:1.2.3.4 mx -all<\/pre>\n\n\n\n<pre class=\"wp-block-verse\">Damit nimmt Google wieder Mails an - wenn die IP stimmt ;-)<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">DKIM<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM (DomainKeys Identified Mail) ist ein weitere M\u00f6glichkeit der Absicherung von Mail-Kommunikation. W\u00e4hrend SPF festlegt, wer senden darf, beweist DKIM mit einer digitalen Signatur, dass die E-Mail auf dem Weg nicht ver\u00e4ndert wurde und wirklich vom angegebenen Server stammt.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bei Systemen mit Plesk wie dem Strato vServer musste ich die TXT-Eintr\u00e4ge aus dem Plesk ins Strato DNS kopieren, die Namen sind:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">default._domainkey.meine.tld <\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">und der Inhalt beginnt mit:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"> default._domainkey<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">N\u00e4chster m\u00f6glicher Schritt: DMARC<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TXT Eintrag-Beispiel:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">v=DMARC1; p=quarantine; adkim=r; aspf=r; <br>rua=mailto:admin@deine-domain.de<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">und nach einer Testzeit <code>p=quarantine<\/code> in <code>p=reject<\/code> \u00e4ndern<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Das Problem Gmail lehnt die Mails ab mit folgendem Fehler: (&#8230;) our email has been blocked because the sender isunauthenticated. 550-5.7.26 Gmail requires all senders to authenticate witheither SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF (&#8230;) did not pass (&#8230;) Sender Policy Framework (SPF) DNS-Eintr\u00e4ge checken: https:\/\/mxtoolbox.com\/SuperTool.aspx&hellip; <a class=\"more-link\" href=\"https:\/\/smarthome.bolte.name\/?p=126\"><span class=\"screen-reader-text\">Mail an gmail scheitert von Strato VPS<\/span> weiterlesen<\/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],"tags":[13,16,11,12,14,15],"class_list":["post-126","post","type-post","status-publish","format-standard","hentry","category-vserver","tag-dmarc","tag-gmail","tag-mail","tag-spf","tag-strato","tag-vserver","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mail an gmail scheitert von Strato VPS - Smarthome and more<\/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:\/\/smarthome.bolte.name\/?p=126\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mail an gmail scheitert von Strato VPS - Smarthome and more\" \/>\n<meta property=\"og:description\" content=\"Das Problem Gmail lehnt die Mails ab mit folgendem Fehler: (...) our email has been blocked because the sender isunauthenticated. 550-5.7.26 Gmail requires all senders to authenticate witheither SPF or DKIM. 550-5.7.26 550-5.7.26 Authentication results: 550-5.7.26 DKIM = did not pass 550-5.7.26 SPF (...) did not pass (...) 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