03-30-2009
i think as long as the two host use IPs from same subnet block, there is no need to config anything besides IP address, right?
Last edited by fedora; 03-30-2009 at 01:13 PM..
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LEARN ABOUT DEBIAN
mailaddr
MAILADDR(7) Linux User's Manual MAILADDR(7)
NAME
mailaddr - mail addressing description
DESCRIPTION
This manual page gives a brief introduction to SMTP mail addresses, as used on the Internet. These addresses are in the general format
user@domain
where a domain is a hierarchical dot-separated list of subdomains. These examples are valid forms of the same address:
eric@monet.berkeley.edu
Eric Allman <eric@monet.berkeley.edu>
eric@monet.berkeley.edu (Eric Allman)
The domain part ("monet.berkeley.edu") is a mail-accepting domain. It can be a host and in the past it usually was, but it doesn't have to
be. The domain part is not case sensitive.
The local part ("eric") is often a username, but its meaning is defined by the local software. Sometimes it is case sensitive, although
that is unusual. If you see a local-part that looks like garbage, it is usually because of a gateway between an internal e-mail system and
the net, here are some examples:
"surname/admd=telemail/c=us/o=hp/prmd=hp"@some.where
USER%SOMETHING@some.where
machine!machine!name@some.where
I2461572@some.where
(These are, respectively, an X.400 gateway, a gateway to an arbitrary internal mail system that lacks proper internet support, an UUCP
gateway, and the last one is just boring username policy.)
The real-name part ("Eric Allman") can either be placed before <>, or in () at the end. (Strictly speaking the two aren't the same, but
the difference is beyond the scope of this page.) The name may have to be quoted using "", for example, if it contains ".":
"Eric P. Allman" <eric@monet.berkeley.edu>
Abbreviation.
Many mail systems let users abbreviate the domain name. For instance, users at berkeley.edu may get away with "eric@monet" to send mail to
Eric Allman. This behavior is deprecated. Sometimes it works, but you should not depend on it.
Route-addrs.
In the past, sometimes one had to route a message through several hosts to get it to its final destination. Addresses which show these
relays are termed "route-addrs". These use the syntax:
<@hosta,@hostb:user@hostc>
This specifies that the message should be sent to hosta, from there to hostb, and finally to hostc. Many hosts disregard route-addrs and
send directly to hostc.
Route-addrs are very unusual now. They occur sometimes in old mail archives. It is generally possible to ignore all but the "user@hostc"
part of the address to determine the actual address.
Postmaster.
Every site is required to have a user or user alias designated "postmaster" to which problems with the mail system may be addressed. The
"postmaster" address is not case sensitive.
FILES
/etc/aliases
~/.forward
SEE ALSO
binmail(1), mail(1), mconnect(1), aliases(5), forward(5), sendmail(8), vrfy(8)
RFC 2822 (Internet Message Format)
COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
4.2 Berkeley Distribution 2004-09-15 MAILADDR(7)