After configuring Notifications settings correctly as per the documentation, testing nvsendmail always fails with:
Failed to send message.
nvsendmail trace shows client was not authenticated:
2 NVSENDMA ??? 7632 22 0 83846370613 ConnectToSMTP: mail server is smtp.office365.com on port 587
3 NVSENDMA ??? 7632 23 0 83846894304 ConnectToSMTP: connected to server.
NVSENDMA ??? 7632 30 0 83847076520 DoSMTPSession: service said hello back.
3 NVSENDMA ??? 7632 53 0 83847077220 DoSMTPAuthentication: server did not offer any authentication types
2 NVSENDMA ??? 7632 44 0 83847077233 TalkToServer(): Send 'MAIL FROM:
2 NVSENDMA ??? 7632 46 0 83852177118 TalkToServer(): Reply '530 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM
