邮件传输代理（MTA）基础

$ cat /etc/mail/aliases

# First include some default system aliases from

# /usr/share/sendmail/examples/db/aliases

#

# Mail aliases for sendmail

#

# You must run newaliases(1) after making changes to this file.

#

# Required aliases

postmaster: root

MAILER-DAEMON: postmaster

# Common aliases

abuse: postmaster

spam: postmaster

# Other aliases

# Send steve's mail to bob and pat instead

steve: bob,pat

# Send pat's mail to a file in her home directory and also to her inbox.

# Finally send it to a command that will make another copy.

pat: /home/pat/accumulated-mail,

\pat,

|/home/pat/makemailcopy.sh

# Mailing list for system administrators

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