{"id":11916,"date":"2013-04-25T16:04:20","date_gmt":"2013-04-25T16:04:20","guid":{"rendered":"https:\/\/www.techopedia.com\/definition\/dns-whitelist\/"},"modified":"2013-04-25T16:04:20","modified_gmt":"2013-04-25T16:04:20","slug":"dns-whitelist","status":"publish","type":"definition","link":"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist","title":{"rendered":"DNS Whitelist"},"content":{"rendered":"<h2><span id=\"what_does_dns_whitelist_mean\">What Does DNS Whitelist Mean?<\/span><\/h2>\n<p>A DNS whitelist is a collection of SMTP and email servers that are considered safe to exchange emails with. This list<span style=\"font-size: 10pt\"> is used for email filtering purposes, allowing a system to block emails received from illegitimate or spam email servers. It&#8217;s used to decrease the number of spam emails a user receives.<\/span><\/p>\n<h2><span id=\"techopedia_explains_dns_whitelist\">Techopedia Explains DNS Whitelist<\/span><\/h2>\n<p>A DNS whitelist works when a domain name server is configured with a list of trusted mail servers and domains. When an email is received at the configured server, the SMTP listener utility matches the domain or its IP address with the list of approved mail servers\/email providers. If a match is found, the email is forwarded to the corresponding email address inbox. However, if there is no match, the email is sent to the spam folder or is deleted altogether. <\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Does DNS Whitelist Mean? A DNS whitelist is a collection of SMTP and email servers that are considered safe to exchange emails with. This list is used for email filtering purposes, allowing a system to block emails received from illegitimate or spam email servers. It&#8217;s used to decrease the number of spam emails a [&hellip;]<\/p>\n","protected":false},"author":7813,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"_lmt_disableupdate":"","_lmt_disable":"","om_disable_all_campaigns":false,"footnotes":""},"definitioncat":[219],"class_list":["post-11916","definition","type-definition","status-publish","format-standard","hentry","definitioncat-networks"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is a DNS Whitelist? - Definition from Techopedia<\/title>\n<meta name=\"description\" content=\"This definition explains the meaning of DNS Whitelist and why it matters.\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"DNS Whitelist\" \/>\n<meta property=\"og:description\" content=\"This definition explains the meaning of DNS Whitelist and why it matters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist\" \/>\n<meta property=\"og:site_name\" content=\"Techopedia\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/techopedia\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@techopedia\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist\"},\"author\":{\"name\":\"Margaret Rouse\",\"@id\":\"https:\/\/www.techopedia.com\/#\/schema\/person\/f5dd538e31ee352d105b8af36c4268a5\"},\"headline\":\"DNS Whitelist\",\"datePublished\":\"2013-04-25T16:04:20+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist\"},\"wordCount\":145,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.techopedia.com\/#organization\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist#respond\"]}],\"articleSection\":\"\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist\",\"url\":\"https:\/\/www.techopedia.com\/definition\/27050\/dns-whitelist\",\"name\":\"What is a DNS Whitelist? 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