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I work in a big company and we have just migrated to office 365 in a hybrid scenario.

Here is the "stack":

  • Exchange 2016 Hybrid

  • ADSync with AADConnect

  • Usermailboxes hosted on Office 365

  • Users use the Outlook 2016 Client (can't roll out o365 client, because we have over 50.000 users and so many custom outlook plugins 32 Bit)

We do this as followed:

Create a new ad user.

Enable-RemoteMailbox samAccountName -RemoteRoutingAddress samAccountName@tenant.mail.onmicrosoft.com -PrimarySmtpAddress address@tenant.com -shared

(This also turns of emailAddressPolicy which it should do according to our exchange admins). Our exchange admins are also stuck on that problem so that's why I created this post here)

Then I wait and have a look in the ECP Admin center. Before the sync happens the remote Routing address is: address@tenant.com

After the first sync (every 30 minutes) it's samAccountName@tenant.mail.onmicrosoft.com ==> How it should be.

After another 30 minutes (2nd sync back to AD) it's a X500 address.

When I look it up in PS like get-remotemailbox <UPN> | fl *remote* the address is samAccountName@tenant.mail.onmicrosoft.com (how it should be).

So it's displayed wrong in the ecp.

But the huge problem we face is this:

When I give any user from the company full access to this shared mailbox it won't get Automapped.

After 1 hour of waiting I manually add it. When I do this a .OST error comes.

Error:

"Microsoft Outlook cannot expand the folder. The set of folders cannot be opened. The file C:\Users\UserName\AppData\Local\Microsoft\Outlook{username]}.ost"

Also with outlook restart it's not working. So our guess is because something is wrong about ECP and the Remote Routing address.

Please note that this isn't a client problem. It effects almost every mailbox I create these days.

I had another post about this but with fewer details and without the knowledge of the remote routing address: https://www.reddit.com/r/exchangeserver/comments/eceqm6/automapping_doesnt_work_on_hybrid_setting/

Anyone have any ideas? I appreciate any kind of help from you guys. If you need any more informations please ask

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你有一个混合架构，好的。您需要使用 O365，因为如果您使用旧版本，则需要在每台计算机中更改一点计算机注册表。或者更改本地自动发现。

但是你的大问题确实很大。现在，您不能在 O365 中正确使用邮箱。如果您这样做，您可能可以访问主邮箱，但如果您使用存档，您将无法访问（您只有 OWA 访问权限）。

问候。

于 2020-01-27T16:41:42.970 回答