{"id":45,"date":"2018-12-18T09:50:09","date_gmt":"2018-12-18T08:50:09","guid":{"rendered":"https:\/\/www.smtpecho.de\/?page_id=45"},"modified":"2019-12-09T23:51:29","modified_gmt":"2019-12-09T22:51:29","slug":"startseite","status":"publish","type":"page","link":"https:\/\/www.smtpecho.de\/en\/","title":{"rendered":"Welcome to SMTPecho.de"},"content":{"rendered":"\n<p>SMTPecho.de provides a collection of services which are useful when setting up and testing e-mail servers. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Echo e-mail<\/h2>\n\n\n\n<p>echo [at] smtpecho.de: Incoming e-mails with a valid password immediately receive a reply to the &#8220;Envelop-From&#8221;. The answer contains the e-Mail header (without subject) of the received eMail. (The subject must not contain any special chars)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Password<\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"alignleft\"><img decoding=\"async\" src=\"https:\/\/smtpecho.de\/pw.png\" alt=\"\"\/><\/figure><\/div>\n\n\n\n<p>Enter this password as subject in the e-mail. It is changed every 3 hours and is valid for at least 6 hours, even if a new password is already displayed on the website.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Confirmation of receipt via HTTPs <\/h2>\n\n\n\n<p>The address https:\/\/smtpecho.de\/echo\/[User-ID].txt can be used to check whether SMTPecho has received an e-mail and whether a reply has been sent.<br> (without &#8220;www&#8221; and with extension &#8220;.txt&#8221;, all in lower case letters! HTTP without TLS also works, but is uncool.)<\/p>\n\n\n\n<p>The acknowledgements of receipt are automatically removed 120-123 minutes after the last e-mail.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">User ID<\/h2>\n\n\n\n<p>The User-ID is the SHA224 from the e-mail address (all in lower case!)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Example:\necho \"Vorname.Nachname@SMTPecho.de\" | tr \"[:upper:]\" \"[:lower:]\" | sha224sum\nUser-ID = 32cd2935c292b91c192f72894521964ff39d4bbc13fa6333addf2d4d<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Spam protection<\/h2>\n\n\n\n<p>Since incorrect configurations can occur when setting up e-mail servers, the e-mail server of SMTPecho.de also accepts e-mails which would normally be blocked. As protection against misuse the password in the subject line is used. In addition, the reply e-mail does not contain any content from the original e-mail, but only the mail header without subject. This should make it unattractive for spammers to abuse the service.<\/p>\n\n\n\n<p>E-mails from SMTPecho.de only come from the following IP addresses:<br>IPv4 address: 37.120.168.80<br>IPv6 address: 2a03:4000:6:53d2::1<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Contact<\/h2>\n\n\n\n<p>Please send feedback, improvement suggestions, wishes and complaints to impressum2019 [at] thju.de.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>SMTPecho.de provides a collection of services which are useful when setting up and testing e-mail servers. Echo e-mail echo [at] smtpecho.de: Incoming e-mails with a valid password immediately receive a reply to the &#8220;Envelop-From&#8221;. The answer contains the e-Mail header &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.smtpecho.de\/en\/\"> <span class=\"screen-reader-text\">Welcome to SMTPecho.de<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"full-width-page.php","meta":{"footnotes":""},"class_list":["post-45","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/pages\/45","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/comments?post=45"}],"version-history":[{"count":70,"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/pages\/45\/revisions"}],"predecessor-version":[{"id":308,"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/pages\/45\/revisions\/308"}],"wp:attachment":[{"href":"https:\/\/www.smtpecho.de\/en\/wp-json\/wp\/v2\/media?parent=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}