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Microsoft 365 (Exchange Online), Disable Internal Delivery

sn flag
CoL

We are slowly switching towards Microsoft 365, so we going to use Exchange Online in some weeks/month.

  • We already syncing our on-premise AD with Azure, everything working fine so far, except we got a odd mail situation going, at this moment i try to convert "special" users to exchange online, for test and trial, while keeping all others connected via old pop/imap solution.

  • i get mails via "onmicrosoft.com" delivered to my exchange mail, (e.g. forward from our mail provider (*[email protected] (external provider, main mx) -> forward to [email protected] -> delivered to mailbox of "[email protected]" at exchange online) as a "workaround" to not break all email flow for all users.

  • the issue i got is, that i cannot send an email to an coworker, because exchange keeps sending mails to the "exchange" mailboxes instead of using the "correct" way of mail delivery.

so my question is, can i disable the internal delivery in exchange online to avoid deleting all users from our microsoft 365 account (which also prevent them from using outlook / office / teams).

Score:0
cn flag

Are you using a hybrid mode Exchange? Take a reference at the link here which introduced different scenarios mailflow in hybrid:https://learn.microsoft.com/en-us/exchange/transport-routing

And if you didn't deploy a hybrid, you may need to check if you have manually configured the connectors you need: Configure mail flow using connectors in Exchange Online

Score:0
cv flag
I sit in a Tesla and translated this thread with Ai:

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Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.