Although most of the addresses are SMTP (the uppercased SMTP address is the default), we also see a SIP address for IM communications and an SPO address for use when SharePoint Online generates email on behalf of the user (like a sharing invitation). The proxy addresses for a mailbox can be examined using the Get-ExoMailbox cmdlet. As you can see, a proxy address can use any of the domains registered for the tenant (the accepted domains).įigure 1: Viewing the email proxy addresses for a Microsoft 365 account One is the primary address, used by default whenever the user sends email.
More prosaically, people might have addresses accumulated over the years generated using different address schemes.įigure 1 shows the email addresses available to an account as seen through user settings in the Microsoft 365 admin center. This happens to allow users to continue to receive email using their old and new addresses, and while people usually send new messages using the new company email address, it might be that they need to use the old address until the merger is fully closed. For instance, if your company is involved in a merger, your mailbox might have addresses for both the old and new company. Mergers and Acquisitions and Other Usesīeing able to send email using a selected proxy address is useful in several scenarios.
#Forward mails on macos server 5.4 update#
Update April 27: Message center notification MC252942 says that OWA will get support for the send from proxy address feature in early May.
The early release of a useful new feature is always appreciated, even if I suspect that the feature is only released on the Exchange Online side at present with some client-side work still to come to make the task easier to perform. This is Microsoft 365 roadmap item 59437, which the roadmap says is due for release in June 2021. This week, Microsoft rolled out an update to allow clients to send messages using any SMTP proxy address assigned to a user’s mailbox. Exchange Online can accept and deliver email addressed to any proxy address for a mailbox, but up to now users have been unable to use their non-primary SMTP addresses when sending messages. One of the addresses, called the primary SMTP address, is stamped on outbound messages. Posting an announcement is an odd way of doing things, but there you are…Įxchange Online mailboxes can have multiple SMTP proxy addresses (also known as aliases). It seems like they ran into some problems with the original implementation, did some rework, and have launched again in preview. Update (January 25, 2022): Microsoft has reannounced this feature. Sending a Message Using a Proxy Address.Updating the Exchange Online Configuration.Mergers and Acquisitions and Other Uses.