Hi,
I currently have my own domain, myowndomain.com and it is verified in Office 365. I currently run Exchange on premise and have my ISP based email, Earthlink, forwarded to my on premise Exchange. This has worked flawlessly for years. I can get my email on O365, but sending email does not have the correct address. I want my ISP email "myusername@earthlink.net" to be the send from address. I can do this in Exchange easily with "Primary SMTP Address". However I can't add Earthlink.net as an accepted domain on O365.
I am ready to sign on the dotted line for O365, but this is the deal breaker. Is there ANY way possible for me to be able to send mail as "myusername@earthlink.net"?
