Sendmail 配置文件如下:

　　FEATURE(`no_default_msa',`dnl')dnl (允许MSA被DAMEMON_OPTION覆盖的默认设置)

　　FEATURE(`smrsh',`/usr/sbin/smrsh')dnl (设置邮件发送器smrsh的存放路径)

　　FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl (设置邮件发送器数据库的存放路径)

　　FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl (设置虚拟邮件域数据库的存放路径)

　　FEATURE(redirect)dnl (支持.redirect虚拟域)

　　FEATURE(always_add_domain)dnl (增加主机名到所有本地发送的邮件)

　　FEATURE(use_cw_file)dnl (装载/etc/mail/local-host-names文件中定义的主机名)

　　FEATURE(use_ct_file)dnl (装载可信任用户名单)

　　dnl #

　　dnl # The following limits the number of processes sendmail can fork to accept

　　dnl # incoming messages or process its message queues to 12.) sendmail refuses

　　dnl # to accept connections once it has reached its quota of child processes.

　　dnl #

　　dnl define(`confMAX_DAEMON_CHILDREN', 12)dnl

　　dnl #

　　dnl # Limits the number of new connections per second. This caps the overhead

　　dnl # incurred due to forking new sendmail processes. May be useful against

　　dnl # DoS attacks or barrages of spam. (As mentioned below, a per-IP address

　　dnl # limit would be useful but is not available as an option at this writing.)

　　dnl #

　　dnl define(`confCONNECTION_RATE_THROTTLE', 3)dnl

　　dnl #

　　dnl # The -t option will retry delivery if e.g. the user runs over his quota.

　　dnl #

　　FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl (使用procmail作为本地邮件发送者)

　　FEATURE(`access_db',`hash -T -o /etc/mail/access.db')dnl (从/etc/mail/access.db装载可以中继的域)

　　FEATURE(`blacklist_recipients')dnl (根据访问数据库的值过滤外来邮件)

　　EXPOSED_USER(`root')dnl (禁止伪装发送者地址中出现root用户)

　　dnl #

　　dnl # The following causes sendmail to only listen on the IPv4 loopback address

　　dnl # 127.0.0.1 and not on any other network devices. Remove the loopback

　　dnl # address restriction to accept email from the internet or intranet.

　　dnl #

　　DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl (指定sendmail作为MTA运行时的参数)

　　dnl #

　　dnl # The following causes sendmail to additionally listen to port 587 for

　　dnl # mail from MUAs that authenticate. Roaming users who can't reach their

　　dnl # preferred sendmail daemon due to port 25 being blocked or redirected find

　　dnl # this useful.

　　dnl #

　　dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl

　　dnl #

　　dnl # The following causes sendmail to additionally listen to port 465, but

　　dnl # starting immediately in TLS mode upon connecting. Port 25 or 587 followed

　　dnl # by STARTTLS is preferred, but roaming clients using Outlook Express can't

　　dnl # do STARTTLS on ports other than 25. Mozilla Mail can ONLY use STARTTLS

　　dnl # and doesn't support the deprecated smtps; Evolution <1.1.1 uses smtps

　　dnl # when SSL is enabled-- STARTTLS support is available in version 1.1.1.

　　dnl #

　　dnl # For this to work your OpenSSL certificates must be configured.

　　dnl #

　　dnl DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl

　　dnl #

　　dnl # The following causes sendmail to additionally listen on the IPv6 loopback

　　dnl # device. Remove the loopback address restriction listen to the network.

　　dnl #

　　dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl

　　dnl #

　　dnl # enable both ipv6 and ipv4 in sendmail:

　　dnl #

　　dnl DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6')

　　dnl #

　　dnl # We strongly recommend not accepting unresolvable domains if you want to

　　dnl # protect yourself from spam. However, the laptop and users on computers

　　dnl # that do not have 24x7 DNS do need this.

　　dnl #

#p#

　　FEATURE(`accept_unresolvable_domains')dnl 设置可以接受不能由NDS主机所发送的邮件

　　dnl #

　　dnl FEATURE(`relay_based_on_MX')dnl

　　dnl #

　　dnl # Also accept email sent to "localhost.localdomain" as local email.

　　dnl #

　　LOCAL_DOMAIN(`localhost.localdomain')dnl 设置本地域

　　dnl #

　　dnl # The following example makes mail from this host and any additional

　　dnl # specified domains appear to be sent from mydomain.com

　　dnl #

　　dnl MASQUERADE_AS(`mydomain.com')dnl

　　dnl #

　　dnl # masquerade not just the headers, but the envelope as well

　　dnl #

　　dnl FEATURE(masquerade_envelope)dnl

　　dnl #

　　dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as well

　　dnl #

　　dnl FEATURE(masquerade_entire_domain)dnl

　　dnl #

　　dnl MASQUERADE_DOMAIN(localhost)dnl

　　dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl

　　dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl

　　dnl MASQUERADE_DOMAIN(mydomain.lan)dnl

　　MAILER(smtp)dnl (指定sendmail所有SMTP发送者，包括smtp，esmtp，smtp8,和replay)

　　MAILER(procmail)dnl (指定使用procmail作为本地邮件的发送者)

看了上面的sendmail配置文件，怎么样，对你有帮助吧，快点跟朋友分享吧！

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