1.0PHEONIXSOLUTIONShttps://pheonixsolutions.com/blogadminhttps://pheonixsolutions.com/blog/author/admin/rich600338<blockquote class="wp-embedded-content" data-secret="L2IfRR9rcc"><a href="https://pheonixsolutions.com/blog/postfix-postfixadmin-dovecot-squirrelmail/">install and configure postfix and dovecot on CentOS</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://pheonixsolutions.com/blog/postfix-postfixadmin-dovecot-squirrelmail/embed/#?secret=L2IfRR9rcc" width="600" height="338" title="“install and configure postfix and dovecot on CentOS” — PHEONIXSOLUTIONS" data-secret="L2IfRR9rcc" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript"> /* <![CDATA[ */ /*! This file is auto-generated */ !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); //# sourceURL=https://pheonixsolutions.com/blog/wp-includes/js/wp-embed.min.js /* ]]> */ </script> Postfix is a free and open-source mail transfer agent (MTA) that routes and delivers electronic mail, intended as an alternative to Sendmail MTA. Remove sendmail if it was already installed on your system yum remove sendmail #1 Install Postfix Now Install Postfix  and make sure it started at boot by adding… Continue Readinghttps://pheonixsolutions.com/blog/wp-content/uploads/2016/09/PX2.png38372540