When trying to send mail through the SMTP server, an error message is generated in the e-mail client indicating that the server cannot be found or the server terminated the connection. Certain ISPs (noteably SBC and Earthlink) block outgoing mail that is not sent through their servers.
One pound of fat is equal to about 3500 calories. That means that if you eat an extra 350 calories of food a day, which is about equal to a large piece of cake or a medium milkshake, you would gain an extra pound about every 10 days (350x10). Or you would gain a pound in about 20 days if you eat or drank an extra 175 calories a day (175x20).
3,500 calories equals 1 pound. So a person must have a deficit of 3,500 calories to lose 1 pound of fat. For example, if you eat a 2,200 calorie diet a day, have a Basal Metabolic Rate of 1,900 calories per day, and you row for 45 minutes to burn 800 calories, then you would create a 500 calorie deficit for the day.