{"version":"1.0","provider_name":"FireStorm ISP","provider_url":"https:\/\/www.firestorm.ch\/en\/","title":"Set up your own SPF server","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"RJapCJR6kB\"><a href=\"https:\/\/www.firestorm.ch\/en\/kb\/set-up-your-own-spf-server\/\">Set up your own SPF server<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.firestorm.ch\/en\/kb\/set-up-your-own-spf-server\/embed\/#?secret=RJapCJR6kB\" width=\"600\" height=\"338\" title=\"&#8220;Set up your own SPF server&#8221; &#8212; FireStorm ISP\" data-secret=\"RJapCJR6kB\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.firestorm.ch\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"Set up your own SPF server If you want to create your own SPF entry, add the following TXT entry to your domain in our DNS Manager. Adjust the IP addresses to your desired configuration. spf.musterdomain.ch TXT 86400 v=spf1 mx a ip4:185.85.111.0\/24 ip4:185.85.110.0\/24 ip4:185.85.109.0\/25 ip4:46.140.230.168\/29 ip4:109.234.111.22 ip6:2a14:6640:100::\/56 ip6:2a14:6640:200::\/56 ip6:2a14:6640:300::\/56 &nbsp; Afterwards, you can simply make [&hellip;]"}