E-mail is your connection to help — your Net lifeline.
– Adam Gaffin; EFF’s Guide to the Internet; December 11, 1996.
The Internet help section provides general assistance. This section provides help specific to email. While email is generally one of the most reliable communication mediums known, it is complex enough that it occasionally runs into technical problems. The following sections describe common email problems and suggested solutions.
Resources. You can find a list of the error control codes that email servers send back in response to a failed email in Section 4.2.2, “Numeric Order List Of Reply Codes”, of RFC 821.