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Chapter 5 Troubleshooting Mail Service 93
Books
For general information about mail protocols and other technologies, see these books:
A good introduction to internet Mail service can be found in  Internet Messaging, by
David Strom and Marshall T. Rose (Prentice Hall, 1998).
For more information about MX records, see “DNS and Electronic Mail” in  DNS and
BIND, third edition, by Paul Albitz, Cricket Liu, and Mike Loukides (O’Reilly and
Associates, 1998).
Also of interest is  Removing the Spam: Email Processing and Filtering, by Geo
Mulligan (Addison-Wesley Networking Basics Series, 1999).
To learn about mail standards, see  Essential email Standards: RFCs and Protocols Made
Practical, by Pete Loshin (John Wiley & Sons, 1999).
To learn more about Postx, see  Postx, by Richard Blum (Sams; 1st edition, 2001)
To learn more about Dovecot, see  Pro Open Source Mail: Building an Enterprise Mail
Solution, by Curtis Smith (Apress, 2006).
Internet
There is an abundance of information about mail protocols, DNS, and other related
topics on the Internet.
Request for Comments (RFC) documents provide an overview of a protocol or service
and details about how the protocol should behave.
If you’re a novice server administrator, you might nd RFC background information
helpful. If you’re an experienced server administrator, you’ll nd all the technical details
about a protocol in its RFC document.
You can search for RFC documents by number at www.faqs.org/rfcs.
For technical details about how mail protocols work, see these RFC documents:
 POP: RFC 1725
 IMAP: RFC 2060
 SMTP: RFC 821 and RFC 822
 Sieve: RFC 3028
For more information about Postx, go to www.postx.org.
For more information about Dovect, go to www.dovecot.org
For more information about Sendmail, go to www.sendmail.org.
For more information about SquirrelMail, go to www.squirrelmail.org.
For more information about Sieve, go to http://wiki.dovecot.org/LDA/Sieve.