{"id":1129,"date":"2025-11-12T19:24:17","date_gmt":"2025-11-13T03:24:17","guid":{"rendered":"https:\/\/www.eskimo.com\/support\/?page_id=1129"},"modified":"2025-11-12T19:24:17","modified_gmt":"2025-11-13T03:24:17","slug":"mail-forwarding","status":"publish","type":"page","link":"https:\/\/www.eskimo.com\/support\/mail-forwarding\/","title":{"rendered":"Forwarding"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"font-family: arial,helvetica,sans-serif; font-size: 20pt; color: #008000;\">Mail Settings<\/span><\/p>\n<ul>\n<li class=\"ps-2\" style=\"list-style-type: none;\">\n<ul>\n<li class=\"ps-2\"><span class=\"font-ligatures-none whitespace-pre-wrap\" style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000080;\"><strong>RFC 5322 \u2013 Internet Message Format (2008)<\/strong> This is the current standard that defines the structure of email messages. It explicitly states that the <code class=\"font-ligatures-none mx-0.5 rounded-[4px] border border-stroke-300 bg-accent-200\/60 px-1 py-px font-mono text-foreground-800 text-sm dark:bg-accent-200\">From:<\/code> header field <strong>must appear exactly once<\/strong> in a message.<\/span>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\"><span class=\"font-ligatures-none whitespace-pre-wrap\" style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000080;\">Section 3.6.2 of RFC 5322:<\/span><br \/>\n<blockquote class=\"flex flex-col gap-3 border-s-2 border-foreground-300 ps-3\"><p><span class=\"font-ligatures-none whitespace-pre-wrap\" style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000080;\">\u201cThe \u2018From\u2019 field specifies the author(s) of the message. The \u2018From\u2019 field <strong>must contain exactly one mailbox<\/strong>.\u201d \u201cThe \u2018From\u2019 field <strong>must be present<\/strong> in every message.\u201d<\/span><\/p><\/blockquote>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000000;\">\u00a0 \u00a0 \u00a0This RFC was not previously enforced at Eskimo North.\u00a0 However, because phishing scams, people forging e-mail with From addresses appearing to be from your bank or other security sensitive addresses intending to trick you into revealing authentication information that could result in your account being cleaned out, have been taking advantage of a quirk in many mailers that will show the last From: line as the From address regardless of what is in the actual headers, we have begun to enforce this requirement.<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000000;\">\u00a0 \u00a0 \u00a0This breaks forwarding from sites that do not follow the RFC and fail to escape the From: line in forwarded e-mail.\u00a0 The method of escape is unimportant but the generally accepted method is to add: &#8216;&gt;&#8217; before each line of the forwarded message, however, for the purposes of this RFC only the From: line need be escaped.<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000000;\">\u00a0 \u00a0 \u00a0Thus if you are forwarding e-mail from Gmail or similar RFC non-compliant mail system, you can get around this by manually adding a &#8216;&gt;&#8217; in front of the From: line in the forwarded content before sending.<\/span><\/p>\n<p><span style=\"font-size: 14pt; font-family: arial, helvetica, sans-serif; color: #000000;\">\u00a0 \u00a0 \u00a0Some spammers use a technique of using a one-time bogus address in the header but then including the desired address in a separate From: line, these new filters will also cause their e-mails to be rejected.<\/span><\/p>\n<p><span style=\"font-size: 12pt;\"><span style=\"font-family: arial,helvetica,sans-serif;\">\u00a0<\/span><\/span><span style=\"font-family: arial,helvetica,sans-serif; font-size: 12pt; color: #800000;\"><br \/>\n<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mail Settings RFC 5322 \u2013 Internet Message Format (2008) This is the current standard that defines the structure of email messages. It explicitly states that the From: header field must appear exactly once in a message. Section 3.6.2 of RFC &hellip; <a href=\"https:\/\/www.eskimo.com\/support\/mail-forwarding\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1129","page","type-page","status-publish","hentry","wpautop"],"_links":{"self":[{"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/pages\/1129","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/comments?post=1129"}],"version-history":[{"count":1,"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/pages\/1129\/revisions"}],"predecessor-version":[{"id":1130,"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/pages\/1129\/revisions\/1130"}],"wp:attachment":[{"href":"https:\/\/www.eskimo.com\/support\/wp-json\/wp\/v2\/media?parent=1129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}