带认证Sendmail邮件服务器在RedHat9.0下的安装手册

　　环境：RedHat Linux 9.0 完全安装或者确保以下安装包已经安装完毕：
　　imap-2001a-18.i286.rpm
　　sendmail-8.12.8-4.i386.rpm
　　m4-1.4.1-13.i386.rpm
　　cyrus-sasl-2.1.10-4.i386.rpm
　　cyrus-sasl-md5-2.1.10-4.i386.rpm
　　cyrus-sasl-plain-2.1.10-4.i386.rpm
　　cyrus-sasl-gssapi-2.1.10-4.i386.rpm
　　目的：实现带认证功能的邮件服务器的配置安装
　　
　　一. Sendmail服务配置
　　1. 安装RedHat Linux 9.0后，修改/etc/mail/sendmail.mc，修改后文件如下：
　　divert(-1)dnl
　　dnl #
　　dnl # This is the sendmail macro config file for m4. If you make changes to
　　dnl # /etc/mail/sendmail.mc, you will need to regenerate the
　　dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf package is
　　dnl # installed and then performing a
　　dnl #
　　dnl # make -C /etc/mail
　　dnl #
　　include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
　　VERSIONID(`setup for Red Hat Linux')dnl
　　OSTYPE(`linux')dnl
　　dnl #
　　dnl # Uncomment and edit the following line if your outgoing mail needs to
　　dnl # be sent out through an external mail server:
　　dnl #
　　dnl define(`SMART_HOST',`smtp.your.provider')
　　dnl #
　　define(`confDEF_USER_ID',``8:12'')dnl
　　define(`confTRUSTED_USER', `smmsp')dnl
　　dnl define(`confAUTO_REBUILD')dnl
　　define(`confTO_CONNECT', `1m')dnl
　　define(`confTRY_NULL_MX_LIST',true)dnl
　　define(`confDONT_PROBE_INTERFACES',true)dnl
　　define(`PROCMAIL_MAILER_PATH',`/usr/bin/procmail')dnl
　　define(`ALIAS_FILE', `/etc/aliases')dnl
　　dnl define(`STATUS_FILE', `/etc/mail/statistics')dnl
　　define(`UUCP_MAILER_MAX', `2000000')dnl
　　define(`confUSERDB_SPEC', `/etc/mail/userdb.db')dnl
　　define(`confPRIVACY_FLAGS', `authwarnings,novrfy,noexpn,restrictqrun')dnl
　　define(`confAUTH_OPTIONS', `A')dnl
　　dnl #
　　dnl # The following allows relaying if the user authenticates, and disallows
　　dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links
　　dnl #
　　dnl define(`confAUTH_OPTIONS', `A p')dnl
　　dnl #
　　dnl # PLAIN is the preferred plaintext authentication method and used by
　　dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs do
　　dnl # use LOGIN. Other mechanisms should be used if the connection is not
　　dnl # guaranteed secure.
　　dnl #