To learn how to configure Mac Mail, we suggest that you visit this web link at MacWorld:
It is an excellent resource and shows how to use the many features of Mac Mail and more important, how to configure Mac Mail to use those features.
Now, here is one very important thing to remember, Black Coral Group does NOT use secure email. That means that when configuring Mac Mail for use on our servers, you must turn OFF SSL. If you leave it turned ON, email will not function correctly.
NOTE the SSL default to ON by this program. This is wrong! This MUST be set to OFF to work with our servers.