{"id":9256,"date":"2025-09-25T07:27:45","date_gmt":"2025-09-25T07:27:45","guid":{"rendered":"https:\/\/pariswells.com\/blog\/?p=9256"},"modified":"2025-09-25T07:27:48","modified_gmt":"2025-09-25T07:27:48","slug":"azure-communicaiton-services-error-sending-email-mailbox-unavailable-the-server-response-was-5-3-5-email-senders-username-is-invalid","status":"publish","type":"post","link":"https:\/\/pariswells.com\/blog\/research\/azure-communicaiton-services-error-sending-email-mailbox-unavailable-the-server-response-was-5-3-5-email-senders-username-is-invalid","title":{"rendered":"Azure Communicaiton Services &#8211; Error sending email: Mailbox unavailable. The server response was: 5.3.5 Email sender&#8217;s username is invalid"},"content":{"rendered":"\n<p>Double check your MailFrom addresses are correct ( Matching emails you are sending from ) if the username is correct <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Double check your MailFrom addresses are correct ( Matching emails you are sending from ) if the username is correct<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9256","post","type-post","status-publish","format-standard","hentry","category-research"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/comments?post=9256"}],"version-history":[{"count":1,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9256\/revisions"}],"predecessor-version":[{"id":9257,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9256\/revisions\/9257"}],"wp:attachment":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/media?parent=9256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/categories?post=9256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/tags?post=9256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}