I subscribed to a 2nd mail service and to manage this new account, I created a 2nd "clone" of Eudora by duplicating the original Eudora folder except for Mail and Attachments folders. I then configured the Settings for the new IMAP account.
My ISP tells me that when I "roam" and want to send mail through their SMTP server, I have to access it via a non-standard port number. I didn't see anything in the docs about how to tell Eudora to use some arbitrary port. I tried setting the SMTP server address to: