当前位置: 王朝网络 >> other >> 带认证的Sendmail安装手册

带认证的Sendmail安装手册

王朝other·作者佚名 2006-12-16

窄屏简体版字體: 小|中|大|超大

安装环境：

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

实现目的：

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：

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 #

[color=red:8e47f78b9a]define(QUEUE_DIR, `/var/spool/mqueue/q*')[/color:8e47f78b9a]

[color=red:8e47f78b9a]TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl[/color:8e47f78b9a]

[color=red:8e47f78b9a]define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl[/color:8e47f78b9a]

dnl #

dnl # Rudimentary information on creating certificates for sendmail TLS:

dnl # make -C /usr/share/ssl/certs usage

dnl #

dnl define(`confCACERT_PATH',`/usr/share/ssl/certs')

dnl define(`confCACERT',`/usr/share/ssl/certs/ca-bundle.crt')

dnl define(`confSERVER_CERT',`/usr/share/ssl/certs/sendmail.pem')

dnl define(`confSERVER_KEY',`/usr/share/ssl/certs/sendmail.pem')

dnl #

dnl # This allows sendmail to use a keyfile that is shared with OpenLDAP's

dnl # slapd, which requires the file to be readble by group ldap

dnl #

dnl define(`confDONT_BLAME_SENDMAIL',`groupreadablekeyfile')dnl

dnl #

dnl define(`confTO_QUEUEWARN', `4h')dnl

dnl define(`confTO_QUEUERETURN', `5d')dnl

dnl define(`confQUEUE_LA', `12')dnl

dnl define(`confREFUSE_LA', `18')dnl

define(`confTO_IDENT', `0')dnl

dnl FEATURE(delay_checks)dnl

FEATURE(`no_default_msa',`dnl')dnl

FEATURE(`smrsh',`/usr/sbin/smrsh')dnl

FEATURE(`mailertable',`hash -o /etc/mail/mailertable.db')dnl

FEATURE(`virtusertable',`hash -o /etc/mail/virtusertable.db')dnl

FEATURE(redirect)dnl

FEATURE(always_add_domain)dnl

FEATURE(use_cw_file)dnl

FEATURE(use_ct_file)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

FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl

FEATURE(`blacklist_recipients')dnl

EXPOSED_USER(`root')dnl

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 #

[color=red:8e47f78b9a]dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl[/color:8e47f78b9a]

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 #

[color=red:8e47f78b9a]DAEMON_OPTIONS(`Port=25, Name=MSA')dnl[/color:8e47f78b9a]

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 # NOTE: binding both IPv4 and IPv6 daemon to the same port requires

dnl # a kernel patch

dnl #

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

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 #

FEATURE(`accept_unresolvable_domains')dnl

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

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

MAILER(procmail)dnl

||||||文件中，红色字体的行为需要修改的地方，共有五行需要修改。

第一行是手动添加的，与认证无关，作用是启动多个邮件队列，为了获得更好的传输性能。

第二行和第三行是去掉行首的注释。”TRUST_AUTH_MECH”的作用是使sendmail不管access文件中如何设置，都能 relay 那些通过EXTERNAL, LOGIN, PLAIN, CRAM-MD5或DIGEST-MD5等方式验证的邮件，”confAUTH_MECHANISMS" 的作用是确定系统的认证方式。Outlook Express支持的认证方式是LOGIN。

第四行是加上注释，以便让sendmail可以侦听所有网络设备，为整个网络提供服务，而不仅仅只对本机提供服务。

第五行是修改的，原来内容是:

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

去掉行首的注释符，并且将内容修改成Port=25:

DAEMON_OPTIONS(`Port=25, Name=MSA')dnl

在smtp的默认端口（25）上进行认证，而不是587端口。这样就强制所有使用该邮件服务器进行邮件转发的用户在认证后才能发邮件了。

2. 运行：

# m4 /etc/mail/sendmail.mc > /etc/sendmail.cf

用m4重新生成sendmail.cf文件

3. 既然我们打开了多个队列，现在我们在/var/spool/mqueue/下创建任意多个队列目录，运行：

# cd /var/spool/mqueue

# mkdir q1 q2 q3 q4 q5 q6