{"id":2549,"date":"2023-07-25T15:06:29","date_gmt":"2023-07-25T19:06:29","guid":{"rendered":"https:\/\/increasec.com\/?p=2549"},"modified":"2023-08-23T15:27:30","modified_gmt":"2023-08-23T19:27:30","slug":"tailscale-vs-smtp-office365-com","status":"publish","type":"post","link":"https:\/\/increasec.com\/?p=2549","title":{"rendered":"TailScale VS smtp.office365.com"},"content":{"rendered":"\n<p>Be careful when sending email from a non-domain PC that has TailScale installed.<\/p>\n\n\n\n<p>No domain means that it has no DNS suffix, so TailScale will &#8220;help&#8221; by adding the PRIVATE DNS suffix<\/p>\n\n\n\n<p>Office365 will refuse to accept email that comes from a non-existent domain<\/p>\n\n\n\n<p>The quick solution is to turn off TailScale DNS.   Right click on the tray icon, Preferences, Uncheck Use TailScale DNS<\/p>\n\n\n\n<p>This is really difficult to diagnose and eventually required a Packet Capture, although it may be in some Exchange365 log as well.<\/p>\n\n\n\n<p>Classic example where Understanding the problem is WAAAAY more difficult than actually fixing the problem.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"509\" height=\"89\" src=\"https:\/\/increasec.com\/wp-content\/uploads\/2023\/07\/image-1.png\" alt=\"\" class=\"wp-image-2550\" srcset=\"https:\/\/increasec.com\/wp-content\/uploads\/2023\/07\/image-1.png 509w, https:\/\/increasec.com\/wp-content\/uploads\/2023\/07\/image-1-300x52.png 300w\" sizes=\"auto, (max-width: 509px) 100vw, 509px\" \/><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Be careful when sending email from a non-domain PC that has TailScale installed. No domain means that it has no DNS suffix, so TailScale will &#8220;help&#8221; by adding the PRIVATE&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[107,205],"class_list":["post-2549","post","type-post","status-publish","format-standard","hentry","category-uncategorised","tag-office365","tag-tailscale"],"_links":{"self":[{"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/posts\/2549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/increasec.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2549"}],"version-history":[{"count":2,"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/posts\/2549\/revisions"}],"predecessor-version":[{"id":2607,"href":"https:\/\/increasec.com\/index.php?rest_route=\/wp\/v2\/posts\/2549\/revisions\/2607"}],"wp:attachment":[{"href":"https:\/\/increasec.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/increasec.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/increasec.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}