{"id":3505,"date":"2009-02-27T18:06:32","date_gmt":"2009-02-27T23:06:32","guid":{"rendered":"http:\/\/underhost.com\/blog\/?p=3505"},"modified":"2026-10-23T08:59:56","modified_gmt":"2026-10-23T12:59:56","slug":"configure-exim-cpanel-server-use-smart-host","status":"publish","type":"post","link":"https:\/\/underhost.com\/blog\/configure-exim-cpanel-server-use-smart-host\/","title":{"rendered":"How to Send cPanel Mail Through a Smart Host (Exim Smarthost Setup)"},"content":{"rendered":"<div class=\"uh-blog-hero\" style=\"margin:0 0 40px;text-align:center;padding:48px 24px;border-radius:20px;background:linear-gradient(135deg,#0D1F3C 0%,#125A8A 58%,#176EA5 100%);color:#ffffff;box-shadow:0 20px 40px -15px rgba(13,31,60,0.28);position:relative;overflow:hidden;\">\n<div style=\"display:inline-flex;align-items:center;gap:8px;padding:7px 14px;margin-bottom:16px;border:1px solid rgba(0,212,255,0.32);border-radius:999px;color:#DFF8FF;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:rgba(0,212,255,0.10);\"><i class=\"fas fa-sliders-h\" style=\"color:#00D4FF;\"><\/i> Control Panels<\/div>\n<h1 style=\"color:#ffffff;font-size:clamp(32px,5vw,46px);line-height:1.12;margin:0 0 14px;font-weight:800;\">How to Send cPanel Mail Through a Smart Host (Exim Smarthost Setup)<\/h1>\n<p style=\"font-size:18px;color:#EAF6FF;max-width:800px;margin:0 auto;line-height:1.7;\">Need to relay outgoing emails through another mail server? Learn how to set up a Smart Host in Exim to route emails efficiently.<\/p>\n<\/div>\n<div class=\"uh-blog-excerpt\" style=\"border-left:4px solid #00D4FF;padding:18px 20px;margin:0 0 34px;background:#F8FAFC;color:#1F2937;border-radius:0 14px 14px 0;box-shadow:0 8px 28px rgba(13,31,60,0.08);line-height:1.75;\"><strong style=\"color:#0D1F3C;\">Short answer:<\/strong> In WHM, open <strong>Service Configuration &gt; Exim Configuration Manager &gt; Basic Editor<\/strong>, go to the <strong>Mail<\/strong> tab, and enter a route list in <strong>Smarthost support<\/strong>, for example <code>* smtp.relay.example.com::587<\/code>. If the relay needs a user name and password, turn on <strong>Smarthost requires SMTP authentication<\/strong> and add the credentials as cPanel describes. Save, then send a test message and check <code>\/var\/log\/exim_mainlog<\/code> for the relay host.<\/div>\n<nav aria-label=\"Table of contents\" class=\"uh-toc\" style=\"background:#ffffff;border:1px solid #E5E7EB;border-radius:16px;padding:20px 22px;margin:0 0 34px;box-shadow:0 4px 12px rgba(13,31,60,0.08);\">\n<div style=\"font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#176EA5;margin-bottom:10px;\"><i class=\"fas fa-list\" style=\"color:#00D4FF;\"><\/i> In this guide<\/div>\n<ol style=\"margin:0;padding-left:20px;columns:2 260px;column-gap:28px;line-height:1.9;\">\n<li><a href=\"#what-a-smart-host-is\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">What a smart host is<\/a><\/li>\n<li><a href=\"#before-you-start\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Before you start<\/a><\/li>\n<li><a href=\"#step-1-set-the-smart-host-in-the-basic-editor\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Step 1: set the smart host in the Basic Editor<\/a><\/li>\n<li><a href=\"#step-2-authentication\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Step 2: authentication<\/a><\/li>\n<li><a href=\"#step-3-update-spf\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Step 3: update SPF<\/a><\/li>\n<li><a href=\"#step-4-test-and-check-the-logs\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Step 4: test and check the logs<\/a><\/li>\n<li><a href=\"#keep-dkim-signing\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Keep DKIM signing<\/a><\/li>\n<li><a href=\"#troubleshooting\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Troubleshooting<\/a><\/li>\n<\/ol>\n<\/nav>\n<div class=\"uh-post-content\" style=\"color:#1F2937;font-size:16px;line-height:1.75;\">\n<h2 id=\"what-a-smart-host-is\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-info-circle\" style=\"color:#00D4FF;\"><\/i> What a smart host is<\/h2>\n<p style=\"margin:0 0 18px;\">A smart host is another mail server that accepts your outgoing mail and delivers it for you. Instead of connecting to each recipient&#8217;s mail server, Exim hands every outgoing message to the smart host. Common reasons to use one:<\/p>\n<ul style=\"margin:0 0 24px;padding-left:22px;\">\n<li style=\"margin:0 0 8px;\"><strong>Delivery:<\/strong> a relay service with a good reputation, such as an email delivery provider or Google Workspace&#8217;s SMTP relay.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>Outgoing filtering:<\/strong> a filtering service scans outgoing mail for spam before it leaves.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>Blocked port 25:<\/strong> some networks block direct outgoing connections on port 25.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>One sending address:<\/strong> all servers send from a central relay, which is easier to manage.<\/li>\n<\/ul>\n<p style=\"margin:0 0 18px;\">Incoming mail is not affected. Your MX records and mailboxes stay the same.<\/p>\n<h2 id=\"before-you-start\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-clipboard-check\" style=\"color:#00D4FF;\"><\/i> Before you start<\/h2>\n<ul style=\"list-style:none;padding-left:0;\">\n<li style=\"margin:0 0 8px;\">\u2713 The relay&#8217;s host name and port (usually 587 with TLS, or 25 for IP-authorised relays).<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 How the relay authenticates you: by your server IP address, or with a user name and password.<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 The relay&#8217;s SPF value, to add to your domains&#8217; SPF records.<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 A backup of the current Exim configuration. Exim Configuration Manager can make one for you.<\/li>\n<\/ul>\n<h2 id=\"step-1-set-the-smart-host-in-the-basic-editor\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-terminal\" style=\"color:#00D4FF;\"><\/i> Step 1: set the smart host in the Basic Editor<\/h2>\n<ol style=\"margin:0 0 24px;padding-left:22px;\">\n<li style=\"margin:0 0 8px;\">In WHM, open <strong>Service Configuration &gt; Exim Configuration Manager<\/strong>.<\/li>\n<li style=\"margin:0 0 8px;\">Open the <strong>Basic Editor<\/strong> and the <strong>Mail<\/strong> tab.<\/li>\n<li style=\"margin:0 0 8px;\">Find <strong>Smarthost support<\/strong> and enter the route list (see below).<\/li>\n<li style=\"margin:0 0 8px;\">If the relay needs a login, turn on <strong>Smarthost requires SMTP authentication<\/strong> and follow the prompts.<\/li>\n<li style=\"margin:0 0 8px;\">Click <strong>Save<\/strong>. WHM rebuilds the Exim configuration and restarts Exim.<\/li>\n<\/ol>\n<p style=\"margin:0 0 18px;\">A route list has a domain pattern, then the relay host. The <code>*<\/code> means all remote domains. A port can be added after two colons:<\/p>\n<pre style=\"background:#0D1F3C;color:#EAF6FF;padding:18px 20px;border-radius:14px;overflow-x:auto;line-height:1.7;font-size:15px;\"><code># All outgoing mail through one relay on port 587\n* smtp.relay.example.com::587\n\n# Two relays, tried in order\n* \"smtp1.relay.example.com::587 : smtp2.relay.example.com::587\"<\/code><\/pre>\n<p style=\"margin:0 0 18px;\">Check your relay&#8217;s documentation for the exact host and port.<\/p>\n<h2 id=\"step-2-authentication\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-terminal\" style=\"color:#00D4FF;\"><\/i> Step 2: authentication<\/h2>\n<p style=\"margin:0 0 18px;\">Relays that authorise your server by IP address need no password: ask the relay to allow your server&#8217;s IP. Relays that need a login use the authentication setting above, with the credentials added as cPanel&#8217;s documentation describes for your version. If several domains on the server need different logins, cPanel documents a way to add per-domain authenticators in the Advanced Editor.<\/p>\n<p style=\"margin:0 0 18px;\">Do not edit <code>\/etc\/exim.conf<\/code> directly. cPanel rebuilds it, so changes there are lost. Older guides that add routers to <code>\/etc\/exim.conf.local<\/code> by hand should be replaced with the Basic Editor settings, which cPanel added for this purpose.<\/p>\n<h2 id=\"step-3-update-spf\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-envelope\" style=\"color:#00D4FF;\"><\/i> Step 3: update SPF<\/h2>\n<p style=\"margin:0 0 18px;\">Mail now leaves through the relay, so each domain&#8217;s SPF record must allow it. Add the relay&#8217;s include, keeping a single SPF record per domain, for example:<\/p>\n<pre style=\"background:#0D1F3C;color:#EAF6FF;padding:18px 20px;border-radius:14px;overflow-x:auto;line-height:1.7;font-size:15px;\"><code>v=spf1 +a +mx +ip4:203.0.113.10 include:spf.relay.example.com ~all<\/code><\/pre>\n<p style=\"margin:0 0 18px;\">WHM&#8217;s <strong>Email Deliverability<\/strong> page shows any domains whose records need fixing. See our <a href=\"https:\/\/underhost.com\/blog\/how-to-use-whms-email-deliverability-interface-to-fix-mail-dns-issues\/\">Email Deliverability guide<\/a>.<\/p>\n<h2 id=\"step-4-test-and-check-the-logs\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-terminal\" style=\"color:#00D4FF;\"><\/i> Step 4: test and check the logs<\/h2>\n<pre style=\"background:#0D1F3C;color:#EAF6FF;padding:18px 20px;border-radius:14px;overflow-x:auto;line-height:1.7;font-size:15px;\"><code># Send a test from the server\necho \"smarthost test\" | mail -s \"Smarthost test\" you@example.org\n\n# Watch the delivery\ntail -f \/var\/log\/exim_mainlog<\/code><\/pre>\n<p style=\"margin:0 0 18px;\">A successful delivery shows <code>T=<\/code> with the smart host transport and <code>H=smtp.relay.example.com<\/code>. Open the received message and check the headers: SPF and DKIM should pass.<\/p>\n<h2 id=\"keep-dkim-signing\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-envelope\" style=\"color:#00D4FF;\"><\/i> Keep DKIM signing<\/h2>\n<p style=\"margin:0 0 18px;\">cPanel signs outgoing mail with each domain&#8217;s DKIM key. The Basic Editor smarthost option keeps cPanel&#8217;s normal signing. If you build a custom router or transport in the Advanced Editor instead, check that messages still carry a valid DKIM signature, because a custom transport may not sign them.<\/p>\n<h2 id=\"troubleshooting\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-exclamation-triangle\" style=\"color:#00D4FF;\"><\/i> Troubleshooting<\/h2>\n<div style=\"overflow-x:auto;margin:26px 0;border:1px solid #E5E7EB;border-radius:14px;-webkit-overflow-scrolling:touch;\">\n<table style=\"width:100%;border-collapse:collapse;background:#ffffff;color:#1F2937;font-size:15px;line-height:1.55;margin:0;min-width:600px;\">\n<thead>\n<tr style=\"background:#0D1F3C;color:#fff;\">\n<th style=\"padding:14px;text-align:left;\">Problem<\/th>\n<th style=\"padding:14px;text-align:left;\">Likely cause<\/th>\n<th style=\"padding:14px;text-align:left;\">Fix<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Mail stays in the queue<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">The relay refuses the connection or the login<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Check the error in exim_mainlog, the port, and the credentials or IP authorisation.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">535 Authentication failed<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Wrong user name or password<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Correct the credentials and save the configuration again.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Messages land in spam<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">SPF does not include the relay, or DKIM fails<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Fix the SPF record and check the DKIM signature in the headers.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Local mail goes to the relay<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">The route list matches local domains<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Use the Basic Editor option, which only routes remote domains.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div aria-hidden=\"true\" class=\"uh-section-divider\" style=\"width:min(100% - 32px, 1080px);margin:44px auto;display:grid;grid-template-columns:1fr 32px 1fr;align-items:center;gap:18px;pointer-events:none;\"><span style=\"height:1px;background:linear-gradient(90deg,transparent,rgba(0,212,255,0.40),rgba(23,110,165,0.24),transparent);\"><\/span><img alt=\"\" decoding=\"async\" height=\"32\" loading=\"lazy\" src=\"https:\/\/cdn.underhost.com\/android-chrome-192x192.webp\" style=\"width:32px;height:32px;display:block;border-radius:8px;filter:drop-shadow(0 0 14px rgba(0,212,255,0.30));\" width=\"32\"\/><span style=\"height:1px;background:linear-gradient(90deg,transparent,rgba(23,110,165,0.24),rgba(0,212,255,0.40),transparent);\"><\/span><\/div>\n<\/div>\n<div class=\"uh-blog-cta\" style=\"background:linear-gradient(135deg,#0D1F3C 0%,#125A8A 58%,#176EA5 100%);color:#ffffff;padding:36px 24px;border-radius:20px;text-align:center;margin:44px 0;box-shadow:0 20px 40px -15px rgba(13,31,60,0.32);\">\n<h2 style=\"margin:0 0 12px;font-size:28px;line-height:1.25;color:#ffffff;\">Need help with this?<\/h2>\n<p style=\"font-size:17px;margin:0 auto 22px;color:#EAF6FF;max-width:720px;line-height:1.7;\">Mail delivery problems from your server? Our team can set up a relay and fix SPF, DKIM and DMARC for you.<\/p>\n<p><a href=\"https:\/\/underhost.com\/server-management.php\" style=\"background:linear-gradient(90deg,#00D4FF,#0077FF);color:#ffffff;padding:13px 28px;border-radius:10px;text-decoration:none;font-weight:800;display:inline-block;margin:8px;\">See server management plans<\/a><a href=\"https:\/\/customerpanel.ca\/client\/\" style=\"background:transparent;color:#ffffff;padding:12px 28px;border-radius:10px;text-decoration:none;font-weight:800;display:inline-block;margin:8px;border:1px solid rgba(255,255,255,0.32);\">Contact @CustomerPanel<\/a><\/div>\n<div class=\"uh-faq-section\" id=\"faq\" style=\"margin:34px 0;scroll-margin-top:90px;\">\n<h2 style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:0 0 18px;border-bottom:2px solid rgba(0,212,255,0.22);padding-bottom:10px;\">Frequently asked questions<\/h2>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">How do I set up a smart host in cPanel?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">In WHM, open Exim Configuration Manager &gt; Basic Editor &gt; Mail and enter a route list in Smarthost support, then save.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Can the smart host require a password?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Yes. Turn on Smarthost requires SMTP authentication in the Basic Editor and add the credentials as cPanel documents.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Do I need to change my MX records?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">No. A smart host only handles outgoing mail.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Will my SPF record need changing?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Yes. Add the relay&#8217;s include or IP addresses to each domain&#8217;s SPF record.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Should I edit exim.conf directly?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">No. cPanel rebuilds it. Use Exim Configuration Manager.<\/p>\n<\/div>\n<\/div>\n<p><!-- uh-related-start --><\/p>\n<div style=\"background:#F4F8FC;border:1px solid #DCE7F3;border-radius:14px;padding:18px 22px;margin:32px 0 8px;\">\n<h2 style=\"margin:0 0 12px;font-size:22px;\">Related guides<\/h2>\n<ul style=\"margin:0;padding-left:20px;\">\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/how-to-configure-modsecurity-in-cpanel-for-advanced-security\/\">How to Configure ModSecurity in cPanel for Advanced Security<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/install-clamav-in-centos-with-cpanel\/\">Updated MARCH 2025: How to Install and Configure ClamAV Antivirus on a VPS or Dedicated Server<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/cpumemorymysql-usage-blank-whm\/\">Updated MARCH 2025: Fixing Blank &#8220;CPU\/Memory\/MySQL Usage&#8221; Page in cPanel<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/changing-the-outgoing-email-ip-in-cpanel-exim-step-by-step-guide\/\">Changing the Outgoing Email IP in cPanel &amp; Exim: Step-by-Step Guide<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/creating-custom-email-filters-in-cpanel-for-better-email-management\/\">Creating Custom Email Filters in cPanel for Better Email Management<\/a><\/li>\n<\/ul>\n<\/div>\n<p><!-- uh-related-end --><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"How do I set up a smart host in cPanel?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In WHM, open Exim Configuration Manager > Basic Editor > Mail and enter a route list in Smarthost support, then save.\"}}, {\"@type\": \"Question\", \"name\": \"Can the smart host require a password?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Turn on Smarthost requires SMTP authentication in the Basic Editor and add the credentials as cPanel documents.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to change my MX records?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. A smart host only handles outgoing mail.\"}}, {\"@type\": \"Question\", \"name\": \"Will my SPF record need changing?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Add the relay's include or IP addresses to each domain's SPF record.\"}}, {\"@type\": \"Question\", \"name\": \"Should I edit exim.conf directly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. cPanel rebuilds it. Use Exim Configuration Manager.\"}}]}<\/script><\/p>\n<h2 id=\"sources\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-book\" style=\"color:#00D4FF;\"><\/i> Sources<\/h2>\n<ul style=\"margin:0 0 24px;padding-left:22px;\">\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/docs.cpanel.net\/whm\/service-configuration\/exim-configuration-manager\/\">cPanel documentation: Exim Configuration Manager<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/docs.cpanel.net\/knowledge-base\/webmail\/srs-support-in-exim-v496\/\">cPanel documentation: SRS support in Exim 4.96 (smarthost settings)<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Need to relay outgoing emails through another mail server? Learn how to set up a Smart Host in Exim to route emails efficiently.<\/p>\n","protected":false},"author":1,"featured_media":4775,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,202,205],"tags":[108,123,143,136,109],"class_list":["post-3505","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-control-panels","category-cpanel-whm","category-email","tag-tag-cpanel","tag-tag-domains","tag-email-deliverability","tag-tag-exim","tag-tag-whm"],"_links":{"self":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/3505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/comments?post=3505"}],"version-history":[{"count":8,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/3505\/revisions"}],"predecessor-version":[{"id":6976,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/3505\/revisions\/6976"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/media\/4775"}],"wp:attachment":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/media?parent=3505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/categories?post=3505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/tags?post=3505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}