Hi,
CF8admin > Server Settings > Mail and some comments.
User name
Password
If your mail server requires authentication, you can specify a user name and password to use.
-0365 requires authentication so use a valid 0365 account details.
Server Port
The default port number for mail servers. The standard SMTP mail server port is 25.
-0365 will not be accepting requests on port 25 use valid port EG 587.
Enable TLS connection to mail server
Select this check box to enable Transport Level Security (TLS) on the connection to the mail server.
-0365 will only allow secure (makes sense because it's cloud) so enable TLS.
HTH, Carl.
