Office 365 Mail SMTP Relay Issue
Posted on 2016-11-20
We are using the O365 mail relay connectors to send email from a third party software. All emails sent to O365 hosted email domains are sent and received ok. If we try to send to an non hosted O365 email domain it gets rejected. How can we setup the smtp reply to send externally from o365
I thought setting up smtp authentication may do the trick but I can't find where to set this up on the O365 admin console.