Hi,

We're using Office365 and Windows Server 2012 R2

Based on suggestions I found here, I've configured Outgoing Email using:

SMTP, Port 587 and TLS enabled (I've also tried varying combinations of these, restarting server each time).

I'm still getting an error, "Sending Notification Failed"

Login/password works fine as it's being used for Incoming Email, which also works.  I've also tested Server via Telnet session and it can communicate with smtp.office365.com

Not sure what else to do but I'm stuck at this point and cannot proceed with rollout until I can get this resolved.

Thanks in advance for any help!