ugh.book

Subject: Returned Mail: User Unknown 67

• Farmers consider bats their friends because of the insects they eat.
  Farmers consider Sendmail their friend because it gets more college-
  educated people interested in subsistence farming as a career.

I could go on and on, but I think you get the idea. Stay tuned for

the .22 penetration test results!

—Rob

Subject: Returned Mail: User Unknown .....................................

A mail system must perform the following relatively simple tasks each
time it receives a message in order to deliver that message to the intended
reciepient:

1. Figure out which part of the message is the address and which part
   is the body.


2. Decompose the address into two parts: a name and a host (much as
   the U.S. Postal System decomposes addresses into a name, a
   street+number, and town+state.)


3. If the destination host isn’t you, send the message to the specified
   host.