I have a dedicated server with exim on it. I also have a regular shared hosting account ("sharedhostingdomain.com") on hostgator. I want to configure exim to always use hostgator's smtp server ("mail.sharedhostingdomain.com") for email delivery.
The problem is that hostgator's smtp server is obviously requiring authentication and it's on a different port (26). Since I do have legitimate account, I do have access credentials, but I don't know how to force exim to always use that SMTP server instead of trying to connect to the receipient's smtp server directly and where to specify those access credentials.