Hi Everyone,
I am hoping someone else has a solution to this issue. I am getting nowhere with Trend. We are performing a staged migration to O365 from exchange 2007. The way this works, once a mailbox is migrated, email sent to our primary email domain arrives at our exchange server and is forwarded to the O365 mailbox using an onmicrosoft.com alias. Trend Micro HES is blocking the forwarded message. Email sent from within our organization works. I also added onmicrosoft.com to our spf record. Does anyone know how I can resolve this? I have 6 users down since Friday.
Thanks Much,
Rick