Linux Administration Handbook, Second Edition

18.18. Exercises

E18.1	[sendmail specific] Briefly list the differences and similarities between genericstable and virtusertable. In what situations would you use each?
E18.2	[sendmail specific] Compare the use of /etc/mail/aliases with the use of an LDAP server to store mail aliases. What are the advantages and disadvantages of each?
E18.3	Briefly explain the difference between a mail user agent (MUA), a delivery agent (DA), and an access agent (AA). Then explain the difference between a mail transport agent (MTA) and a mail submission agent (MSA).
E18.4	[sendmail specific] What is smrsh, and why should you use it instead of /bin/sh? If smrsh is in use at your site, what programs are allowed to run as the program ...