Tools/SMTP Hosts
QuickSilver is very flexible in the use of SMTP hosts. Each message, in fact, can have a different SMTP host. That's why QS messages have a Host header. When the message is sent, the Host header is read and the value there is checked with the list of SMTP host profiles. If found, that info is used during the send. If no profile is found, the value itself is treated as the host name and used for the send.
When To Use The SMTP Host Manager
If your email service doesn't require authentication you don't need to add it to the SMTP Servers list. The server name in the Host header is all QS requires to use the server. If the service uses a port other than 25 you can specify that port in the Host header as in this example:
Host: smtp.myisp.net:225
Alternatively, you can add that server to the hosts list. Then QS would lookup the port number there and specifying it in the header isn't necessary or useful.
Why A Name Field
The Name field can be any descriptive name. You'll use it in the Host header same as if it was the server name itself. For simplicity and clarity, you might make the Name field the same as the Server name. There is a situation, though, where you'll need to name it differently. If you have more than one account with a service that requires authentication, you'll need to have a unique name for each. For the myisp.net example above, you might use smtp.myisp.net2 or smtp.myisp.net-lola for a second account.