{"id":2960,"date":"2018-03-08T16:52:36","date_gmt":"2018-03-08T21:52:36","guid":{"rendered":"http:\/\/lisa.rushworth.us\/?p=2960"},"modified":"2018-03-08T16:52:36","modified_gmt":"2018-03-08T21:52:36","slug":"unable-to-send-as-from-outlook-with-exchange","status":"publish","type":"post","link":"https:\/\/www.rushworth.us\/lisa\/?p=2960","title":{"rendered":"Unable to &#8216;send as&#8217; from Outlook With Exchange"},"content":{"rendered":"<p>I&#8217;ve had a confounding problem &#8212; we have sendmail magicing up millions of e-mail addresses for us, but occasionally we need to be able to send\u00a0<em>from<\/em> one of these addresses too. I&#8217;ve got a web form that allows text-based messages (html or plain text), but I don&#8217;t want to figure out how to upload and attach images via a web form. Until I get around to updating the web form, I just set up a new Exchange mailbox and grant myself full access (which includes send as permission)<\/p>\n<p>Except ever since we got always updating Office 2016, I&#8217;ve gotten nondelivery reports when I subsequently try to send from this new mailbox that claim I don&#8217;t have permission to send as the user in question. And I&#8217;ve verified my access three times. Even added explicit send-as in addition to full mailbox access.<\/p>\n<p>I&#8217;ve finally discovered\u00a0<em>why\u00a0<\/em>I get this false error. The &#8216;from&#8217; in Outlook allows free-form text which then may or may not resolve against an Exchange mailbox. And based on the permissions of the mailbox (or the lack of permissions of the non-resolved mailbox), it may or may not work. So I don&#8217;t have permission to send from newmailbox@ourdomain.ccTLD, I\u00a0<em>do<\/em> have permission to send from the Exchange mailbox that happens to have that as its primary SMTP address. Sigh!.<\/p>\n<p>When you use offline mode \/ cached Exchange mode, and an offline address list, the SMTP address <em>doesn&#8217;t<\/em> resolve out to that mailbox. And Exchange quite properly reports an error. To get the whole thing to work (assuming &#8220;wait until tomorrow&#8221; isn&#8217;t a good answer):<\/p>\n<p>First, the offline address needs to be updated (either wait or hit the powershell management console on the server)<\/p>\n<pre>Update-OfflineAddressBook -Identity \"Default Offline Address Book\"\r\n<\/pre>\n<p>Secondly, Outlook needs to retrieve the updated address book. Within the Outlook client, use send\/receive to update the address lists.\u00a0<strong><em>Then<\/em><\/strong><strong>\u00a0<\/strong>you can send as the mailbox to which you have perfectly configured access.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve had a confounding problem &#8212; we have sendmail magicing up millions of e-mail addresses for us, but occasionally we need to be able to send\u00a0from one of these addresses too. I&#8217;ve got a web form that allows text-based messages (html or plain text), but I don&#8217;t want to figure out how to upload and &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[64,538,539],"class_list":["post-2960","post","type-post","status-publish","format-standard","hentry","category-system-administration","tag-exchange","tag-ndr","tag-send-as"],"_links":{"self":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/2960","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2960"}],"version-history":[{"count":1,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/2960\/revisions"}],"predecessor-version":[{"id":2961,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=\/wp\/v2\/posts\/2960\/revisions\/2961"}],"wp:attachment":[{"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2960"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2960"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rushworth.us\/lisa\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2960"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}