redhat8.0自带sendmail配置认证服务器,以及升级s…

用redhat8.0自带的sendmail+sasl配置需要认证的邮件服务器,以及把sendmail8.12.5升级到sendmail.8.12.9


redhat8默认安装的是sendmail8.12.5.
系统安装时，选择的是custom,sendmail默认安装。

一、首先，要生成sendmail.cf文件，一般是编译sendmail.mc来生成sendmail.cf,这样的好处是通过编译，会查看出一些sendmail的设置错误

和漏洞。
#cd/etc/mail
#visendmail.mc

divert(-1)
dnlThisisthesendmailmacroconfigfile.Ifyoumakechangestothisfile,
dnlyouneedthesendmail-cfrpminstalledandthenhavetogeneratea
dnlnew/etc/mail/sendmail.cfbyrunningthefollowingcommand:
dnl
dnlm4/etc/mail/sendmail.mc>/etc/mail/sendmail.cf
dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')
VERSIONID(`linuxsetupforRedHatLinux')dnl
OSTYPE(`linux')
dnlUncommentandeditthefollowinglineifyourmailneedstobesentout
dnlthroughanexternalmailserver:
dnldefine(`SMART_HOST',`smtp.your.provider')
define(`confDEF_USER_ID',``8:12'')dnl
undefine(`UUCP_RELAY')dnl
undefine(`BITNET_RELAY')dnl
dnldefine(`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
dnldefine(`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
dnlTRUST_AUTH_MECH(`EXTERNALDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl
dnldefine(`confAUTH_MECHANISMS',`EXTERNALGSSAPIDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl
TRUST_AUTH_MECH(`EXTERNALDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl
define(`confAUTH_MECHANISMS',`EXTERNALGSSAPIDIGEST-MD5CRAM-MD5LOGINPLAIN')dnl
DAEMON_OPTIONS(`Port=25,Name=MTA')dnl
DAEMON_OPTIONS(`Port=587,Name=MSA,M=Ea')dnl
dnldefine(`confCACERT_PATH',`/usr/share/ssl/certs')
dnldefine(`confCACERT',`/usr/share/ssl/certs/ca-bundle.crt')
dnldefine(`confSERVER_CERT',`/usr/share/ssl/certs/sendmail.pem')
dnldefine(`confSERVER_KEY',`/usr/share/ssl/certs/sendmail.pem')
dnldefine(`confTO_QUEUEWARN',`4h')dnl
dnldefine(`confTO_QUEUERETURN',`5d')dnl
dnldefine(`confQUEUE_LA',`12')dnl
dnldefine(`confREFUSE_LA',`18')dnl
define(`confTO_IDENT',`0')dnl
dnlFEATURE(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
dnlThe'-t'optionwillretrydeliveryife.g.theuserrunsoverhisquota.
FEATURE(local_procmail,`',`procmail-t-Y-a$h-d$u')dnl
FEATURE(`access_db',`hash-T-o/etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl

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