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Onprem - Exchange Shared-Mailbox mails stuck in outbox

Solution: I went from an external network and added the shared-mailbox as an account. Then, I switched the active account to the shared mailbox and was then able to delete it. Idk why it worked, but ...
filip.ris's user avatar
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Sending email from external SMTP server to internal addresses

We gave up on getting this working using the external SMTP server for sending directly. We ended up setting up a SMTP Relay using Exchange Online. The SMTP Relay allows unauthenticated access to send ...
Denham's user avatar
  • 38
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Publish Exchange calendar publicly with multiple configurations

In Exchange 2010, the ability to publish a calendar with multiple different visibility options (like "all details" and "free/busy") is not as flexible as it is in Exchange Online ...
JakeZhang's user avatar
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Outlook 365 vs Outlook 2021 (Search)

Verify that the search syntax you're using is correct and consistent across both versions of Outlook. Sometimes, subtle differences in how the search query is entered can affect the results. Office ...
Bruce jing's user avatar
1 vote

Sending email from external SMTP server to internal addresses

Here are a few areas to check and some potential solutions: Ensure that your SMTP relay is correctly configured to send emails to your internal Exchange Online addresses. You might need to set up an ...
JakeZhang's user avatar
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Setting up forced/mutual/required TLS with checktls.com, sending works, receiving returns 530 5.7.1 (not authenticated)

Ten years too late but two answers. The error you all see is because the Mutual Auth TLS setting is telling the server to look for and authenticate an SSL certificate from the client. "Mutual&...
Steve Shoemaker's user avatar
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Powershell Exchange Add-MailboxPermission

It's a bit late to answer this, and it's not a fully fledged answer, but I can't comment. I don't know exactly what you were trying to do, but I got the same scenario (Get- worked, but Add- didn't, ...
Badger's user avatar
  • 41
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Onprem - Exchange Shared-Mailbox mails stuck in outbox

It sounds like your email is stuck in the outbox and won't be transferred to the sent items. You can see the solution from the article below first.This may seem a bit tedious. Email stays in Outbox ...
JoeQiao's user avatar
  • 11

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