I just starting using Office 365 today. I tried to send some messages back and forth between my personal gmail and Office.
From GM to O, it failed and i'm gettting the message:
This is the mail system at host
mail248-tx2-R.bigfish.com.
I'm sorry to have to inform you that your message could
not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
and the message does NOT go through.
Also, from O365 to Gmail, the mail just doesn't make it at all
HELP,
Neil