{"id":879,"date":"2025-12-26T07:30:59","date_gmt":"2025-12-26T06:30:59","guid":{"rendered":"https:\/\/mybox.com\/help\/?post_type=manual_kb&#038;p=879"},"modified":"2026-06-03T09:54:37","modified_gmt":"2026-06-03T07:54:37","slug":"tipuri-de-filtre-spam-dkim","status":"publish","type":"manual_kb","link":"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/","title":{"rendered":"Tipuri de filtre antispam - DKIM"},"content":{"rendered":"<div class=\"translation-block translation-block-merged\">\n<p class=\"wp-block-paragraph\">DKIM (DomainKeys Identified Mail) is an email authentication method that helps verify that an email message was actually sent by the domain it claims to originate from and that its content was not modified during transmission.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM protects against email spoofing by allowing domain owners to digitally sign outgoing messages using cryptographic keys.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#How_Does_DKIM_Work\" >How Does DKIM Work?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#DKIM_Verification_Process\" >DKIM Verification Process<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#Example_DKIM_Signature\" >Example DKIM Signature<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#Cryptographic_Methods_Used\" >Cryptographic Methods Used<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#Advantages_of_DKIM\" >Advantages of DKIM<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#DKIM_DNS_Records\" >DKIM DNS Records<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#DKIM_and_Other_Anti-Spam_Technologies\" >DKIM and Other Anti-Spam Technologies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/types-of-spam-filters-dkim\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Does_DKIM_Work\"><\/span>How Does DKIM Work?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<\/div>\n\n<div id=\"mybox-1714774859\" class=\"mybox-content mybox-entity-placement\"><div class=\"early-access-banner-inpost\">\r\n  <div class=\"banner-left-inpost\">\r\n    <div class=\"icon-box-inpost\">\r\n      <img decoding=\"async\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/02\/square-info-icon.svg\" alt=\"Info\">\r\n    <\/div>\r\n    <div class=\"text-box-inpost\">\r\n      <span class=\"label-inpost\"><span class=\"translation-block translation-block-banner-text\">Acces timpuriu<\/span><\/span>\r\n      <h4><span class=\"translation-block translation-block-banner-text\">Mai ave\u021bi nevoie de ajutor?<\/span><\/h4>\r\n      <p><span class=\"translation-block translation-block-banner-text\">Contacta\u021bi echipa noastr\u0103 de servicii pentru clien\u021bi.<\/span><\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"banner-right-inpost\">\r\n    <a href=\"https:\/\/panel.mybox.com\/helpdesk2\/v\/list\/\" class=\"banner-button-inpost\"><span class=\"translation-block translation-block-banner-text\">Trimite mesaj<\/span><\/a>\r\n  <\/div>\r\n<\/div><\/div>\n\n<div class=\"translation-block translation-block-merged\"><p class=\"wp-block-paragraph\">When an email is sent, the sending mail server generates a digital signature and inserts it into the email header as a special field called:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DKIM-Signature\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The recipient&#8217;s mail server then retrieves the corresponding public key from the sender&#8217;s DNS zone and uses it to verify the signature.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If the signature is valid:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The message is confirmed to originate from the authorized domain.<\/li>\n\n\n\n<li>The message content is verified as unchanged during transit.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If verification fails:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>The message may be marked as suspicious.<\/li>\n\n\n\n<li>The message may be delivered to the Spam folder.<\/li>\n\n\n\n<li>The message may be rejected, depending on the recipient&#8217;s mail server configuration.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DKIM_Verification_Process\"><\/span>DKIM Verification Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The sender&#8217;s mail server signs the message.<\/li>\n\n\n\n<li>A DKIM signature is added to the email header.<\/li>\n\n\n\n<li>The recipient&#8217;s mail server receives the message.<\/li>\n\n\n\n<li>The recipient retrieves the public key from the sender&#8217;s DNS zone.<\/li>\n\n\n\n<li>The signature is verified.<\/li>\n\n\n\n<li>The message is accepted or flagged based on the verification result.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Example_DKIM_Signature\"><\/span>Example DKIM Signature<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A DKIM signature may look similar to the following:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>DKIM-Signature: v=1; a=rsa-sha256; d=example.net; s=brisbane;\nc=relaxed\/simple; q=dns\/txt; l=1234; t=1117574938; x=1118006938;\nh=from:to:subject:date:keywords:keywords;\nbh=MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI=;\nb=dzdVyOfAKCdLXdJOc9G2q8LoXSlEniSbav+yuU4zGeeruD00lszZVoG4ZHRNiYzR\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The exact value will vary for every domain and message.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cryptographic_Methods_Used\"><\/span>Cryptographic Methods Used<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM commonly uses:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SHA-256 cryptographic hashing<\/li>\n\n\n\n<li>RSA public-key cryptography<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These mechanisms ensure that the signature cannot be forged without access to the domain&#8217;s private key.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_of_DKIM\"><\/span>Advantages of DKIM<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Protects against email spoofing.<\/li>\n\n\n\n<li>Verifies sender authenticity.<\/li>\n\n\n\n<li>Confirms that message content has not been modified.<\/li>\n\n\n\n<li>Improves email deliverability.<\/li>\n\n\n\n<li>Increases trust in messages sent from your domain.<\/li>\n\n\n\n<li>Works together with SPF and DMARC for enhanced email security.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DKIM_DNS_Records\"><\/span>DKIM DNS Records<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For DKIM verification to work correctly, the domain must publish a special TXT record in its DNS zone containing the public key.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When adding a DKIM record in the DNS zone, make sure to enter the full host name.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Example:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dhosting._domainkey.yourdomain.com\n<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The record value should contain the DKIM public key generated for your domain.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DKIM_and_Other_Anti-Spam_Technologies\"><\/span>DKIM and Other Anti-Spam Technologies<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM is most effective when combined with other email authentication mechanisms such as:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SPF (Sender Policy Framework)<\/li>\n\n\n\n<li>DMARC (Domain-based Message Authentication, Reporting and Conformance)<\/li>\n\n\n\n<li>RBL (Realtime Blackhole Lists)<\/li>\n\n\n\n<li>Content-based spam filters<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Together, these technologies significantly reduce the risk of spoofed emails and improve overall email security.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DKIM (DomainKeys Identified Mail) is an email authentication technology that digitally signs outgoing messages and allows receiving mail servers to verify their authenticity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">By using cryptographic signatures and DNS-based public keys, DKIM helps protect domains from spoofing, ensures message integrity, and improves email deliverability. Properly configured DKIM records are an important part of modern email security and anti-spam protection.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","format":"standard","manualknowledgebasecat":[21,41],"manual_kb_tag":[1001,1418,1015,203,1137,242,1280,246,1282,283,1407,340,1408,562,1409,737,1410,772,1411,797,1412,798,1413,799,1414,944,1415,948,1416,999,1417],"class_list":["post-879","manual_kb","type-manual_kb","status-publish","format-standard","hentry","manualknowledgebasecat-antispam-filters","manualknowledgebasecat-email","manual_kb_tag-dkim-record","manual_kb_tag-cryptographic-hash-function","manual_kb_tag-web-domain","manual_kb_tag-dns-zone","manual_kb_tag-email-header","manual_kb_tag-mybox","manual_kb_tag-types-of-spam-filters","manual_kb_tag-email-security","manual_kb_tag-sender-policy-framework","manual_kb_tag-mybox-panel","manual_kb_tag-domainkeys-identified-mail","manual_kb_tag-spam-filters","manual_kb_tag-digital-signature","manual_kb_tag-email","manual_kb_tag-email-spoofing-prevention","manual_kb_tag-spoofing","manual_kb_tag-header-signature","manual_kb_tag-domain","manual_kb_tag-txt-record","manual_kb_tag-email-authentication","manual_kb_tag-dns-configuration","manual_kb_tag-dkim","manual_kb_tag-domainkey-record","manual_kb_tag-dmarc","manual_kb_tag-dkim-selector","manual_kb_tag-public-key-cryptography","manual_kb_tag-selector-record","manual_kb_tag-signature-verification","manual_kb_tag-rsa-algorithm","manual_kb_tag-dns-txt-record","manual_kb_tag-sha25-hash"],"_links":{"self":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":2,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/879\/revisions"}],"predecessor-version":[{"id":3921,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/879\/revisions\/3921"}],"wp:attachment":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/media?parent=879"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manualknowledgebasecat?post=879"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb_tag?post=879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}