Sendmail?

[Jerry Waldorf]

	I would like to learn more about sendmail and how the configuration
file works and how the alias tables work, etc.  Could some kind sole point 
me to some documentation on this?  I have read RFC 822 and 821 and have 
read the man pages and a little about the other ARPA services but I would
like to know more about the actual sendmail program.  i.e. how it parses
the mail message what it does with the Bcc: field and ...

	If there is a book on how this stuff was desingned and how
it operates that would be great.

	Thank you for any pointers.