{"id":243657,"date":"2023-10-25T16:40:32","date_gmt":"2023-10-25T16:40:32","guid":{"rendered":"https:\/\/www.prominic.net\/?p=243657"},"modified":"2023-10-25T16:40:35","modified_gmt":"2023-10-25T16:40:35","slug":"mail-security-spf-dkim-and-dmarc","status":"publish","type":"post","link":"https:\/\/wordpress.prominic.net\/mail-security-spf-dkim-and-dmarc\/","title":{"rendered":"Mail Security: SPF, DKIM, and DMARC"},"content":{"rendered":"\n[et_pb_section fb_built=&#8221;1&#8243; theme_builder_area=&#8221;post_content&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221;][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">We all know how important mail security is and our own Triston Dixon last week presented a webinar on the subject that was originally prepared for <a href=\"https:\/\/collabsphere.org\/\">Collabsphere 2023<\/a>. Since that session ended up having to be canceled at the time, the webinar attendees got a chance to learn more about SPF, DKIM, and DMARC, as was originally planned.\u00a0<\/span><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text quote_border_weight=&#8221;14px&#8221; quote_border_color=&#8221;#811937&#8243; _builder_version=&#8221;4.23&#8243; link_font=&#8221;||||||||&#8221; quote_font=&#8221;|700|||||||&#8221; quote_text_color=&#8221;#000000&#8243; quote_font_size=&#8221;18px&#8221; quote_line_height=&#8221;1.8em&#8221; header_font=&#8221;||||||||&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_line_height=&#8221;1.5em&#8221; max_width=&#8221;700px&#8221; 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header_2_line_height__hover_enabled=&#8221;1em&#8221; header_2_text_shadow_style__hover=&#8221;none&#8221; header_2_text_shadow_style__hover_enabled=&#8221;none&#8221; header_2_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_2_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_3_font_size__hover=&#8221;22px&#8221; header_3_font_size__hover_enabled=&#8221;22px&#8221; header_3_letter_spacing__hover=&#8221;0px&#8221; header_3_letter_spacing__hover_enabled=&#8221;0px&#8221; header_3_line_height__hover=&#8221;1em&#8221; header_3_line_height__hover_enabled=&#8221;1em&#8221; header_3_text_shadow_style__hover=&#8221;none&#8221; header_3_text_shadow_style__hover_enabled=&#8221;none&#8221; header_3_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_3_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_4_font_size__hover=&#8221;18px&#8221; header_4_font_size__hover_enabled=&#8221;18px&#8221; header_4_letter_spacing__hover=&#8221;0px&#8221; header_4_letter_spacing__hover_enabled=&#8221;0px&#8221; header_4_line_height__hover=&#8221;1em&#8221; header_4_line_height__hover_enabled=&#8221;1em&#8221; header_4_text_shadow_style__hover=&#8221;none&#8221; header_4_text_shadow_style__hover_enabled=&#8221;none&#8221; header_4_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_4_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_5_font_size__hover=&#8221;16px&#8221; header_5_font_size__hover_enabled=&#8221;16px&#8221; header_5_letter_spacing__hover=&#8221;0px&#8221; header_5_letter_spacing__hover_enabled=&#8221;0px&#8221; header_5_line_height__hover=&#8221;1em&#8221; header_5_line_height__hover_enabled=&#8221;1em&#8221; header_5_text_shadow_style__hover=&#8221;none&#8221; header_5_text_shadow_style__hover_enabled=&#8221;none&#8221; header_5_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_5_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_6_font_size__hover=&#8221;14px&#8221; header_6_font_size__hover_enabled=&#8221;14px&#8221; header_6_letter_spacing__hover=&#8221;0px&#8221; header_6_letter_spacing__hover_enabled=&#8221;0px&#8221; header_6_line_height__hover=&#8221;1em&#8221; header_6_line_height__hover_enabled=&#8221;1em&#8221; header_6_text_shadow_style__hover=&#8221;none&#8221; header_6_text_shadow_style__hover_enabled=&#8221;none&#8221; header_6_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_6_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; text_letter_spacing__hover=&#8221;0px&#8221; text_letter_spacing__hover_enabled=&#8221;0px&#8221; text_text_shadow_style__hover=&#8221;none&#8221; text_text_shadow_style__hover_enabled=&#8221;none&#8221; text_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; text_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">WHY ARE SPF, DKIM, and DMARC important?<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here is why these records are important:<\/span><\/p>\n<p style=\"text-align: justify;\">\n<ul>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">all of them add credibility to your domain<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They help protect your users from phishing\/spoofing attempts<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It is an important part of your email security infrastructure to have each of these records in place for your domain.<\/span><\/li>\n<\/ul>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; 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header_4_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_5_font_size__hover=&#8221;16px&#8221; header_5_font_size__hover_enabled=&#8221;16px&#8221; header_5_letter_spacing__hover=&#8221;0px&#8221; header_5_letter_spacing__hover_enabled=&#8221;0px&#8221; header_5_line_height__hover=&#8221;1em&#8221; header_5_line_height__hover_enabled=&#8221;1em&#8221; header_5_text_shadow_style__hover=&#8221;none&#8221; header_5_text_shadow_style__hover_enabled=&#8221;none&#8221; header_5_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_5_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_6_font_size__hover=&#8221;14px&#8221; header_6_font_size__hover_enabled=&#8221;14px&#8221; header_6_letter_spacing__hover=&#8221;0px&#8221; header_6_letter_spacing__hover_enabled=&#8221;0px&#8221; header_6_line_height__hover=&#8221;1em&#8221; header_6_line_height__hover_enabled=&#8221;1em&#8221; header_6_text_shadow_style__hover=&#8221;none&#8221; header_6_text_shadow_style__hover_enabled=&#8221;none&#8221; header_6_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_6_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; text_letter_spacing__hover=&#8221;0px&#8221; text_letter_spacing__hover_enabled=&#8221;0px&#8221; text_text_shadow_style__hover=&#8221;none&#8221; text_text_shadow_style__hover_enabled=&#8221;none&#8221; text_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; text_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">SPF Records<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">SPF Records short for Sender Policy Framework are the ones that validate what IP addresses and host names are authorized to send email on behalf of your domain. They help prevent spammers from sending on behalf of your domain and also add long-term credibility to your domain.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here is an example of a standard SPF record:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/SPF-Record.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; alt=&#8221;SPF Record&#8221; title_text=&#8221;SPF Record&#8221; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You will need to set this up as a TXT record in the public DNS for your domain.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">There are different types of switches that are used:<\/span><\/p>\n<p style=\"text-align: justify;\">\n<ul>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">mx: specifies the IPs of the MX records for your domain<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">a: specifies a fully qualified domain name<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Include: specifies a domain name and will also consider the SPF for that specific domain<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">ip4: specifies an IP address<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">~all: This is a soft fail for the SPF record. It will allow mail that does not pass the record through, but it may be marked as spam.<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">-all: This is a hard fail for the SPF record. 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header_2_text_shadow_style__hover=&#8221;none&#8221; header_2_text_shadow_style__hover_enabled=&#8221;none&#8221; header_2_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_2_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_3_font_size__hover=&#8221;22px&#8221; header_3_font_size__hover_enabled=&#8221;22px&#8221; header_3_letter_spacing__hover=&#8221;0px&#8221; header_3_letter_spacing__hover_enabled=&#8221;0px&#8221; header_3_line_height__hover=&#8221;1em&#8221; header_3_line_height__hover_enabled=&#8221;1em&#8221; header_3_text_shadow_style__hover=&#8221;none&#8221; header_3_text_shadow_style__hover_enabled=&#8221;none&#8221; header_3_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_3_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_4_font_size__hover=&#8221;18px&#8221; header_4_font_size__hover_enabled=&#8221;18px&#8221; header_4_letter_spacing__hover=&#8221;0px&#8221; header_4_letter_spacing__hover_enabled=&#8221;0px&#8221; header_4_line_height__hover=&#8221;1em&#8221; header_4_line_height__hover_enabled=&#8221;1em&#8221; header_4_text_shadow_style__hover=&#8221;none&#8221; header_4_text_shadow_style__hover_enabled=&#8221;none&#8221; header_4_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_4_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_5_font_size__hover=&#8221;16px&#8221; header_5_font_size__hover_enabled=&#8221;16px&#8221; header_5_letter_spacing__hover=&#8221;0px&#8221; header_5_letter_spacing__hover_enabled=&#8221;0px&#8221; header_5_line_height__hover=&#8221;1em&#8221; header_5_line_height__hover_enabled=&#8221;1em&#8221; header_5_text_shadow_style__hover=&#8221;none&#8221; header_5_text_shadow_style__hover_enabled=&#8221;none&#8221; header_5_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_5_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_6_font_size__hover=&#8221;14px&#8221; header_6_font_size__hover_enabled=&#8221;14px&#8221; header_6_letter_spacing__hover=&#8221;0px&#8221; header_6_letter_spacing__hover_enabled=&#8221;0px&#8221; header_6_line_height__hover=&#8221;1em&#8221; header_6_line_height__hover_enabled=&#8221;1em&#8221; header_6_text_shadow_style__hover=&#8221;none&#8221; header_6_text_shadow_style__hover_enabled=&#8221;none&#8221; header_6_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_6_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; text_letter_spacing__hover=&#8221;0px&#8221; text_letter_spacing__hover_enabled=&#8221;0px&#8221; text_text_shadow_style__hover=&#8221;none&#8221; text_text_shadow_style__hover_enabled=&#8221;none&#8221; text_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; text_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">DKIM Records<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">DKIM Records, short for DomainKeys Identified Mail, are the records that sign all outgoing emails for your company domain with an encrypted key. They allow recipients to tell if an email has been tampered with during transit.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">DKIM Records are important because they help prevent phishing\/spoofing attempts for your domain. They also add credibility to all outgoing emails for your domain as well as build a long-term domain reputation over time.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here is an example of a DKIM Flow Chart:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DKIM-Records.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; alt=&#8221;DKIM Records&#8221; title_text=&#8221;DKIM Records&#8221; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You can implement DKIM configuration for Domino as of Domino 12.0.1. In order to create a DKIM key for your domain, you will need to make sure you have an existing credstore.nsf on your Domino server.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If you don\u2019t have a credstore in place on your Domino server, you can create one by using the following commands:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DKIM-Records_1.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DKIM Records_1&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Once you have completed that step you can start generating a DKIM key:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DKIM-Records_2.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DKIM Records_2&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You can then use the following command to export the key to a TXT which you will then add to your DNS:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DKIM-Records_3.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DKIM Records_3&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Once you have generated the record you need to add it to the public DNS for your domain along as a TXT record. The hostname for the TXT record will be the name you gave the selector. The hostname that would be used for the example record is as follows:<\/span><\/p>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">12345._domainkey<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">After you have verified that the public DNS is updated you will need to apply the following router setting on your Domino server:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DKIM-Records_4.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DKIM Records_4&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text quote_border_weight=&#8221;14px&#8221; quote_border_color=&#8221;#811937&#8243; _builder_version=&#8221;4.23&#8243; link_font=&#8221;||||||||&#8221; quote_font=&#8221;|700|||||||&#8221; quote_text_color=&#8221;#000000&#8243; quote_font_size=&#8221;18px&#8221; quote_line_height=&#8221;1.8em&#8221; header_font=&#8221;||||||||&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_line_height=&#8221;1.5em&#8221; max_width=&#8221;700px&#8221; max_width_tablet=&#8221;&#8221; max_width_phone=&#8221;&#8221; max_width_last_edited=&#8221;on|tablet&#8221; hover_enabled=&#8221;0&#8243; header_2_font_size_tablet=&#8221;30px&#8221; header_2_font_size_phone=&#8221;15px&#8221; header_2_font_size_last_edited=&#8221;on|desktop&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221; header_font_size__hover=&#8221;30px&#8221; header_font_size__hover_enabled=&#8221;30px&#8221; header_letter_spacing__hover=&#8221;0px&#8221; header_letter_spacing__hover_enabled=&#8221;0px&#8221; header_text_shadow_style__hover=&#8221;none&#8221; header_text_shadow_style__hover_enabled=&#8221;none&#8221; header_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_2_font_size__hover=&#8221;26px&#8221; header_2_font_size__hover_enabled=&#8221;26px&#8221; header_2_letter_spacing__hover=&#8221;0px&#8221; header_2_letter_spacing__hover_enabled=&#8221;0px&#8221; header_2_line_height__hover=&#8221;1em&#8221; header_2_line_height__hover_enabled=&#8221;1em&#8221; header_2_text_shadow_style__hover=&#8221;none&#8221; header_2_text_shadow_style__hover_enabled=&#8221;none&#8221; header_2_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_2_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_3_font_size__hover=&#8221;22px&#8221; header_3_font_size__hover_enabled=&#8221;22px&#8221; header_3_letter_spacing__hover=&#8221;0px&#8221; header_3_letter_spacing__hover_enabled=&#8221;0px&#8221; header_3_line_height__hover=&#8221;1em&#8221; header_3_line_height__hover_enabled=&#8221;1em&#8221; header_3_text_shadow_style__hover=&#8221;none&#8221; header_3_text_shadow_style__hover_enabled=&#8221;none&#8221; header_3_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_3_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_4_font_size__hover=&#8221;18px&#8221; header_4_font_size__hover_enabled=&#8221;18px&#8221; header_4_letter_spacing__hover=&#8221;0px&#8221; header_4_letter_spacing__hover_enabled=&#8221;0px&#8221; header_4_line_height__hover=&#8221;1em&#8221; header_4_line_height__hover_enabled=&#8221;1em&#8221; header_4_text_shadow_style__hover=&#8221;none&#8221; header_4_text_shadow_style__hover_enabled=&#8221;none&#8221; header_4_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_4_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_5_font_size__hover=&#8221;16px&#8221; header_5_font_size__hover_enabled=&#8221;16px&#8221; header_5_letter_spacing__hover=&#8221;0px&#8221; header_5_letter_spacing__hover_enabled=&#8221;0px&#8221; header_5_line_height__hover=&#8221;1em&#8221; header_5_line_height__hover_enabled=&#8221;1em&#8221; header_5_text_shadow_style__hover=&#8221;none&#8221; header_5_text_shadow_style__hover_enabled=&#8221;none&#8221; header_5_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_5_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_6_font_size__hover=&#8221;14px&#8221; header_6_font_size__hover_enabled=&#8221;14px&#8221; header_6_letter_spacing__hover=&#8221;0px&#8221; header_6_letter_spacing__hover_enabled=&#8221;0px&#8221; header_6_line_height__hover=&#8221;1em&#8221; header_6_line_height__hover_enabled=&#8221;1em&#8221; header_6_text_shadow_style__hover=&#8221;none&#8221; header_6_text_shadow_style__hover_enabled=&#8221;none&#8221; header_6_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_6_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; text_letter_spacing__hover=&#8221;0px&#8221; text_letter_spacing__hover_enabled=&#8221;0px&#8221; text_text_shadow_style__hover=&#8221;none&#8221; text_text_shadow_style__hover_enabled=&#8221;none&#8221; text_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; text_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">DMARC Records<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">DMARC Records, short for Domain-based Message Authentication, Reporting, and Conformance, are the records that tell a recipient\u2019s server to either Quarantine, Reject, or Allow a message to continue delivery.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">They will verify that all the messages that are received from your domain to a recipient\u2019s server are passing an SPF check as well as a DKIM check.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">To implement DMARC you will add it as a TXT record to your domain&#8217;s public DNS. Here is an example record:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DMARC-Record.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; alt=&#8221;DMARC Records&#8221; title_text=&#8221;DMARC Record&#8221; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The example record has the policy set to none which means that it will allow all mail.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here are the policy switches for DMARC:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DMARC-Record_1.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DMARC Record_1&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DMARC-Record_2.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DMARC Record_2&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Implementing DMARC is not a one-off action. You need to monitor the DMARc reports that are being generated as well as verify that there are no messages that are originating from your organization but are failing the SPF\/DKIM checks.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If you detect messages that are failing you will then verify that you have their sending servers included in the SPF record as well as signing with the DKIM key.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">You can find the DMARC email reports in a ZIP file that will include an XML report for you to review. Here is an example of an IP that passed:<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DMARC-Record_4.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DMARC Record_4&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here is an example of a situation when the reported IP passed DKIM but failed SPF. This indicates the IP potentially needs to be added to the SPF record.<\/span><\/p>[\/et_pb_text][et_pb_image src=&#8221;https:\/\/www.prominic.net\/wp-content\/uploads\/2023\/10\/DMARC-Record_5.png&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; title_text=&#8221;DMARC Record_5&#8243; align=&#8221;center&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text quote_border_weight=&#8221;14px&#8221; quote_border_color=&#8221;#811937&#8243; _builder_version=&#8221;4.23&#8243; link_font=&#8221;||||||||&#8221; quote_font=&#8221;|700|||||||&#8221; quote_text_color=&#8221;#000000&#8243; 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theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">Spam Filters<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">As you might imagine spam filters are an important part of your mail security infrastructure. Antispam protection is going to filter all incoming emails for your domain to help protect your users from phishing scams, viruses, and spam in general.<\/span><\/p>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Here are some features that anti spam filters offer:<\/span><\/p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<ul>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Attachment defense\/ Sandboxing<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">URL defense<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Domain spoofing protection<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Backscatter protection<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Email tagging<\/span><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Introducing a carefully selected compilation of renowned spam filters:<\/span><\/p>\n<p style=\"text-align: justify;\">\n<ul>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">SpamSentinel from Maysoft<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Proofpoint<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Barracuda<\/span><\/li>\n<li style=\"font-weight: 400; text-align: justify;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Mimecast<\/span><\/li>\n<\/ul>[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text quote_border_weight=&#8221;14px&#8221; quote_border_color=&#8221;#811937&#8243; _builder_version=&#8221;4.23&#8243; link_font=&#8221;||||||||&#8221; quote_font=&#8221;|700|||||||&#8221; quote_text_color=&#8221;#000000&#8243; quote_font_size=&#8221;18px&#8221; quote_line_height=&#8221;1.8em&#8221; header_font=&#8221;||||||||&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_font_size=&#8221;25px&#8221; header_2_line_height=&#8221;1.5em&#8221; max_width=&#8221;700px&#8221; max_width_tablet=&#8221;&#8221; max_width_phone=&#8221;&#8221; max_width_last_edited=&#8221;on|tablet&#8221; hover_enabled=&#8221;0&#8243; header_2_font_size_tablet=&#8221;30px&#8221; header_2_font_size_phone=&#8221;15px&#8221; header_2_font_size_last_edited=&#8221;on|desktop&#8221; 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header_4_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_5_font_size__hover=&#8221;16px&#8221; header_5_font_size__hover_enabled=&#8221;16px&#8221; header_5_letter_spacing__hover=&#8221;0px&#8221; header_5_letter_spacing__hover_enabled=&#8221;0px&#8221; header_5_line_height__hover=&#8221;1em&#8221; header_5_line_height__hover_enabled=&#8221;1em&#8221; header_5_text_shadow_style__hover=&#8221;none&#8221; header_5_text_shadow_style__hover_enabled=&#8221;none&#8221; header_5_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_5_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; header_6_font_size__hover=&#8221;14px&#8221; header_6_font_size__hover_enabled=&#8221;14px&#8221; header_6_letter_spacing__hover=&#8221;0px&#8221; header_6_letter_spacing__hover_enabled=&#8221;0px&#8221; header_6_line_height__hover=&#8221;1em&#8221; header_6_line_height__hover_enabled=&#8221;1em&#8221; header_6_text_shadow_style__hover=&#8221;none&#8221; header_6_text_shadow_style__hover_enabled=&#8221;none&#8221; header_6_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; header_6_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; text_letter_spacing__hover=&#8221;0px&#8221; text_letter_spacing__hover_enabled=&#8221;0px&#8221; text_text_shadow_style__hover=&#8221;none&#8221; text_text_shadow_style__hover_enabled=&#8221;none&#8221; text_text_shadow_color__hover=&#8221;rgba(0,0,0,0.4)&#8221; text_text_shadow_color__hover_enabled=&#8221;rgba(0,0,0,0.4)&#8221; theme_builder_area=&#8221;post_content&#8221; sticky_enabled=&#8221;0&#8243;]<blockquote>\n<h3 style=\"text-align: center;\"><span style=\"font-weight: 400;\">Domino 12.0.2: ICAP<\/span><\/h3>\n<\/blockquote>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">ICAP, short for Internet Content Adaptation Protocol, was introduced in the 12.0.2 version of Domino and is a tool that scans incoming attachments in mail messages for viruses. It does require a third-party ICAP protocol server to do the virus scanning and it has been tested with Trend Micro web security and McAfee web gateway.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The recording of Tristan&#8217;s webinar is below:<\/span><\/p>[\/et_pb_text][et_pb_video src=&#8221;https:\/\/vimeo.com\/prominic\/mailsecuritywebinar?share=copy&#8221; _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;][\/et_pb_video][\/et_pb_column][\/et_pb_row][et_pb_row _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221;][et_pb_column _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; type=&#8221;4_4&#8243; theme_builder_area=&#8221;post_content&#8221;][et_pb_text _builder_version=&#8221;4.23&#8243; _module_preset=&#8221;default&#8221; theme_builder_area=&#8221;post_content&#8221; hover_enabled=&#8221;0&#8243; sticky_enabled=&#8221;0&#8243;]<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">If you need a hand with securing your email servers<\/span><a href=\"mailto:sales@prominic.net\"><span style=\"font-weight: 400;\"> just drop us a line<\/span><\/a><span style=\"font-weight: 400;\"> and we will help you have a more secure email.<\/span><\/p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"excerpt":{"rendered":"<p>We all know how important mail security is and our own Triston Dixon last week presented a webinar on the subject that was originally prepared for Collabsphere 2023. Since that session ended up having to be canceled at the time, the webinar attendees got a chance to learn more about SPF, DKIM, and DMARC, as [&hellip;]<\/p>\n","protected":false},"author":27,"featured_media":243694,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[151,143],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.5 (Yoast SEO v22.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Mail Security: SPF, DKIM, and DMARC - Prominic.NET<\/title>\n<meta name=\"description\" content=\"Discover the latest advances in mail security. 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