Today we are announcing the General Availability (GA) of Sending from Aliases for Exchange Online. This was a highly requested feature that now empowers users to send emails from any alias (proxy add...
Updated Oct 08, 2026
Version 3.0
Blog Post
Nino_Bilic
I was surprised to see this being announced to go GA, I was under the impression that it silently went into it already. Nonetheless glad to see the announcement.
We have been using sending from aliases with several of our customers. However some of them have a hybrid Centralized mail flow and are suffering from the known issue where the onmicrosoft.com domain is used on OOF replies and some other system generated mails.
I never raised a DCR before, so I am not familiar with it, but if I am to understand it correctly, when I do create one via our support channel, then it will get fixed for the specific tenants? Or will our request merely be handled as a way to measure the much priority will be given to fix the issue?
Nino_Bilic
Microsoft
MicrosoftA DCR (Design Change Request) is basically a request from a business to engineering group (Exchange, Outlook etc.) to make a change to existing functionality / make it work differently. It is done via a support request and requires some sort of description of business impact. Engineering then evaluates what to do. The result is that something changes in the product (for everyone) or it does not change.