Appendix D, Additional Information...
version 6.8.1 (Modified)
The references below contain WWW (World Wide Web) pointers to additional sources of information related to the internet protocols. Web documents may be accessed via programs like Netscape or Internet Explorer.
http://www.internic.net/: To understand what a Domain Name is and what you have to do to register one.
http://www.ietf.org/: Internet Engineering Task Force (IETF) site.
http://www.rfc-editor.org/: To understand what an RFC is and to search for RFCs and sites related to the RFC series (http://www.rfc-editor.org/rfc.html ).
ftp://ftp.isi.edu/in-notes/rfc821.txt: Simple Mail Transfer Protocol -- RFC 821.
http://www.w3c.org/: All you need to know about the World Wide Web.
http://www.imap.org: Site reserved for IMAP protocol. You will find all the useful information concerning this protocol there.