Forum Discussion

JeremyTBradshaw's avatar
JeremyTBradshaw
Iron Contributor
Jan 24, 2020
Solved

Remote Domains, Automatic Forwarding, and ForwardingAddress VS ForwardingSMTPAddress

The many ways to block automatic email forwarding in Exchange Online  Reducing or increasing information flow to another company  Forward email from Office 365 to another email account  Configure ...
  • JeremyTBradshaw's avatar
    Jan 25, 2020
    I had the realization of the explanation for the 'why' - ForwardingAddress takes only existing recipients (RecipientId) and so if the specified recipient happens to be a MailContact / MailUser with an ExternalEmailAddress, well that is no longer 'automatic forwarding' to the remote domain, the forwarding was to the internally existing recipient, so the external email address of that recipient is not part of the AutoForwardEnabled evaluation.

    ForwardingSMTPAddress takes an SMTP (email) address, not a RecipientId, so suddenly this address is part of the evaluation.

    The main thing that isn't documented is just that even if an administrator sets ForwardingSMTPAddress, it's still subject to Remote Domain AutoForwardEnabled.

    I'll see if I can get this into the docs I linked earlier via GitHub issues (where possible).

Resources