Modify recipient domain

Occasional Visitor



I would like to create a routing rule allowing to overwrite recipient email addresses.


We have an internal email address and we want to modify the domain to and redirect to some smarthosts.


Redirect to Smarthosts, it is quite simple but I want to know if I can modify the recipient domain from to


I do not find any setting in EOP regarding this.


The remote domain accepts only email address from its domains.



2 Replies

Nope, address rewrite is not available in EOP/O365.

Additionally to Vasil's answer:

You could route outgoing email through an on-premises gateway that modifies the addresses.