Is there a way to set external senders for an specific alias on Exchange Online?

Occasional Contributor



I was wondering if I can achieve this in my organization:

Some distribution groups have non-default names to avoid SPAM (e.g. is

Can I set the RequireSenderAuthenticationEnabled to an specific alias?

So I can have a default alias that's is only internal and one non-default that it's for external messages.

2 Replies
best response confirmed by Vandrey da Trindade da Cunha Pereira (Occasional Contributor)

Nope, it will apply to messages sent to any alias of the DG. If you want to target a specific one, use Transport rules.