In electronic mail terms, a message that fails to be delivered properly is said to have bounced. When you send an electronic mail message that bounces, the postmaster will get involved to return the message to you. This postmaster is not a real person, but is a computer program which sends (bounces) electronic mail messages back to you.
There are various reasons why electronic mail messages bounce. For example:
(@), does not exist or is invalid.
Of course, several other message are possible. When you receive a bounced message, you should try to understand the reason for the bounce before deciding if you should send the message again.
This concludes this lesson of E-MAIL . Please return to the EMAIL Index and continue with the next lesson.