Mail Addressing
The mail address contains the name of the recipient and the system where the mail message is delivered. When you are administering a small mail system that does not use a nameservice, addressing mail is easy: Login names uniquely identify users.
Mail addressing for more complex sites is also easy when you use DNS Mail Exchange (MX) records.
UUCP Route-Based Addressing
UUCP route-based addressing requires the sender of an e-mail message to specify not only the local address (typically a user name) and its final destination but also the route that the message must take to reach its final destination.
NOTE
UUCP route-based addressing is shown here for historical reasons. These days, almost no one uses this form of addressing.
Get Solaris™ 8 Advanced System Administrator's Guide, Third Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
