Does e-mail contain a trace list of the stages of transmission of a message? If yes, how does it work, and what can it be used for?


Yes, as a list of "Received:" header fields at the top of the RFC822 messade heading. Each passing of the message from one MTA to another causes an entry to be added. Useful for finding out the cause of problems with e-mail. Can also be used for loop control purposes.

List of exam questions