{"id":639,"date":"2017-10-27T10:07:33","date_gmt":"2017-10-27T08:07:33","guid":{"rendered":"https:\/\/msb365.abstergo.ch\/?p=639"},"modified":"2023-06-23T13:13:05","modified_gmt":"2023-06-23T11:13:05","slug":"mails-external-cannot-received-migration-exchange-online","status":"publish","type":"post","link":"https:\/\/www.msb365.blog\/?p=639","title":{"rendered":"Mails from external cannot be received after migration to Exchange Online"},"content":{"rendered":"<p>After migrating several users from Exchange 2010 to Exchange Online it can happen that some of the users are not able to receive e-mails from external senders.<\/p>\n<p>In a normal case, you would go and check the send\/receive connector settings.<\/p>\n<p>You can find more info about this in the following article:<\/p>\n<p><a href=\"https:\/\/technet.microsoft.com\/en-us\/library\/ms.exch.eac.connectorselection(v=exchg.150).aspx\">https:\/\/technet.microsoft.com\/en-us\/library\/ms.exch.eac.connectorselection(v=exchg.150).aspx<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>But this is not the solution in our case. The problem is, that not all of the users have this issue.<\/p>\n<p>So let\u2019s have a look on how we found out more about this issue and how to fix it:<\/p>\n<p>&nbsp;<\/p>\n<p>After sending an e-mail to an user with having this problem, I received the following error Message:<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-640\" src=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-1024x831.png\" alt=\"\" width=\"570\" height=\"462\" srcset=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-1024x831.png 1024w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-600x487.png 600w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-300x244.png 300w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-768x624.png 768w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2-780x633.png 780w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1-2.png 1276w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/><\/p>\n<p>If we have a closer look at this error message, we can see that there are too many hops in the request:<\/p>\n<blockquote><p><img decoding=\"async\" class=\"alignnone size-full wp-image-641\" src=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1.1.png\" alt=\"\" width=\"637\" height=\"76\" srcset=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1.1.png 637w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1.1-600x72.png 600w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/1.1-300x36.png 300w\" sizes=\"(max-width: 637px) 100vw, 637px\" \/><\/p><\/blockquote>\n<p>In our case we are running a hybrid Exchange environment. All e-mails are sent and received by a smart host.<\/p>\n<p>This information tells me that something could be wrong with the routing address, so let\u2019s have a look at it:<\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-642\" src=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/2-2.png\" alt=\"\" width=\"448\" height=\"519\" srcset=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/2-2.png 448w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/2-2-259x300.png 259w\" sizes=\"(max-width: 448px) 100vw, 448px\" \/><\/p>\n<p>as we can see, the wrong entry is set as routing mail address. Instead of the address <a href=\"mailto:alias@contoso.com\">alias@contoso.com<\/a> it has to be <a href=\"mailto:alias@tenant.mail.onmicrosoft.com\">alias@tenant.mail.onmicrosoft.com<\/a>! So we corrected it.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-643\" src=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/3-2.png\" alt=\"\" width=\"448\" height=\"519\" srcset=\"https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/3-2.png 448w, https:\/\/msb365.abstergo.ch\/wp-content\/uploads\/2017\/10\/3-2-259x300.png 259w\" sizes=\"(max-width: 448px) 100vw, 448px\" \/><\/p>\n<p>with this information the on premise Exchange server is able to communicate with Exchange online, again.<\/p>\n<p>&nbsp;<\/p>\n<p>You can find more information about ROUTING MAIL ADDRESS here:<\/p>\n<p><a href=\"https:\/\/technet.microsoft.com\/en-us\/library\/jj937232%28v=exchg.150%29.aspx?f=255&amp;MSPPError=-2147217396\">https:\/\/technet.microsoft.com\/en-us\/library\/jj937232%28v=exchg.150%29.aspx?f=255&amp;MSPPError=-2147217396<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>After migrating several users from Exchange 2010 to Exchange Online it can happen that some of the users are not able to receive e-mails from external senders. In a normal case, you would go and check the send\/receive connector settings. You can find more info about this in the following article: https:\/\/technet.microsoft.com\/en-us\/library\/ms.exch.eac.connectorselection(v=exchg.150).aspx &nbsp; But this [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[1923,2],"tags":[],"class_list":["post-639","post","type-post","status-publish","format-standard","hentry","category-microsoft-365","category-exchange"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/posts\/639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=639"}],"version-history":[{"count":3,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/posts\/639\/revisions"}],"predecessor-version":[{"id":646,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=\/wp\/v2\/posts\/639\/revisions\/646"}],"wp:attachment":[{"href":"https:\/\/www.msb365.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.msb365.blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}