本文系作者原創(chuàng)，轉(zhuǎn)載請保留出處：http://marion.cublog.cn?????
謝謝！
注：本文是另一篇文章“配置簡單帶認(rèn)證的Sendmail服務(wù)器”續(xù)篇，請見http://marion.cublog.cn
[color=Orange][font=黑體][size=3]STARTTLS介紹[/size][/font][/color]
[color=Red]一、SMTP和STARTTLS[/color]
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SMTP協(xié)議默認(rèn)使用明文在網(wǎng)絡(luò)傳送用戶名和密碼，這是十分危險的。為此，sendmail使用TLS來解決這個潛在的危險問題。TLS不僅可以用來加密用戶名和密碼，還可以加密傳送信件的內(nèi)容。Sendmail使用starttls命令來啟動一個SMTP會話加密進(jìn)程（TLS會話）。Micorsoft的outlook軟件和其它的許多MUA也支持STARTTLS。
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STARTTLS能實(shí)現(xiàn)什么樣的功能？
1.實(shí)現(xiàn)對一次E-MAIL通訊中server端以及client端彼此身份的校驗(yàn)；
2.加密傳輸信件（身份不能確認(rèn)的情況下亦可以實(shí)現(xiàn)）；
3.認(rèn)證轉(zhuǎn)發(fā)；
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由于SMTP是一個存儲轉(zhuǎn)發(fā)協(xié)議，并且一封電子郵件的轉(zhuǎn)交投遞可能會涉及到多臺SMTP服務(wù)器，因此，一個MUA就算能夠通過認(rèn)證并把E-MAIL加密傳輸至將要經(jīng)過的第一臺SMTP服務(wù)器，讓最終用戶的SMTP通過發(fā)送端的身份認(rèn)證，并認(rèn)為信件傳送過程中沒有被篡改也是不太可能的。故而，RFC文件聲明說一個實(shí)現(xiàn)公共Email的SMTP服務(wù)器是不必苛求于在傳送郵件中實(shí)現(xiàn)上述功能的。不過，對于一個私有網(wǎng)絡(luò)中的郵件傳輸來講，能夠以要求必需提供有效證書來實(shí)現(xiàn)嚴(yán)格的身份認(rèn)證和加密傳輸，因?yàn)槲覀兛梢詫⒆C書部署到需要傳送EMAIL服務(wù)的每個客戶端。
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當(dāng)然，盡管基于TLS的SMTP服務(wù)所提供的功能不像基于SSL的HTTP服務(wù)那樣完美，但在服務(wù)器和客戶端之間的一次認(rèn)證會話間加密傳輸用戶名和密碼卻是完全可以實(shí)現(xiàn)的。
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[color=Red]二、STARTTLS的工作方式：[/color]
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1.sendmail作為服務(wù)端
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在一次SMTP會話中，客戶端（可能是其它的SMTP服務(wù)器，也可能是一個終端用戶的MUA）通過EHLO命令來探測服務(wù)器是否支持STARTTLS。如果服務(wù)器支持此種方式，客戶就把STARTTLS列入可以使用的命令列里面。此時，客戶端便可以通過STARTTLS命令來和服務(wù)器建立STARTTLS話，服務(wù)器以“準(zhǔn)備好啟動TLS”來回應(yīng)客戶端。
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如果客戶端能夠提供一個SSL證書，Sendmail將會從中提取出有關(guān)CA的信息并和自己信任的CA列表進(jìn)行比較，并嘗試將證書中的common?name和客戶端的主機(jī)名加以比較。同時，Sendmail還將會檢查客戶端的證書是否已經(jīng)存在于自己的訪問數(shù)據(jù)庫中。如果一切順利通過，Sendmail將繼續(xù)后面的會話。實(shí)際使用中，即使Sendmail無法驗(yàn)證客戶端的證書，它也會接受客戶端會話。我們可以在TLS日志中找到有關(guān)的詳細(xì)信息，如果驗(yàn)證順利進(jìn)行，將會出現(xiàn)類同“verify=OK"之類的日志記示，否則，則可能顯示為“verify=FAIL”或者“verify=NO”。
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在無法驗(yàn)證客戶端身份的情況下，Sendmail也將嘗試實(shí)現(xiàn)信件加密傳送。此時，日志中如果記錄有類同“ciper=DHE-RSA-AES256-SHA,bit=128/128"的信息，表示加密成功實(shí)現(xiàn)。加密協(xié)商會話成功實(shí)現(xiàn)后，服務(wù)器端可能會使用基于PLAIN或者LOGIN的SMTP?AUTH方式來驗(yàn)證身份，此時，STARTTLS將會把用戶各和密碼加密傳送，從而在很大程度保證了會話的安全性。
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2.Sendmail作為客戶端
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當(dāng)Sendmail服務(wù)器為最終用戶或者其它的Sendmail轉(zhuǎn)發(fā)信件時，它將作為一臺客戶端與其它的SMTP服務(wù)器通信。此時，如果服務(wù)端支持STARTTLS，即使雙方?jīng)]有配置證書的情況下，Sendmail（前提是也支持STARTTLS）仍將通過STARTTLS命令與其建立通信會話。其過程類同前面所述。
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日志中將會記錄類同“STARTTLS=client”（客戶端）或者“STARTTLS=server”（服務(wù)端）以及有關(guān)版本號、校驗(yàn)方式、加密方式和加密位數(shù)等信息。
[font=黑體][color=Orange][size=3]?
安裝過程[/size][/color][/font]
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本文將以RedHat9.0為例
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[color=Red]一、啟用cyrus-sasl[/color]?
本文使用系統(tǒng)自帶的saslauthd認(rèn)證服務(wù)，請檢查你的系統(tǒng)是否已經(jīng)安裝如下軟件，如果沒有的話，請自行安裝
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1.#?rpm?-aq?|grep?cyrus-sasl
????cyrus-sasl-devel-2.1.10-4
????cyrus-sasl-2.1.10-4
????cyrus-sasl-plain-2.1.10-4
????cyrus-sasl-md5-2.1.10-4
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2.新建/usr/local/lib/sasl2/Sendmail.conf,添加如下內(nèi)容:
???pwcheck_method:?saslauthd
???mech_list:?login?plain?digest-md5
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3.啟動服務(wù)
??#service?saslauthd?start
??#chkconfig?--level?35?saslauthd?on
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[color=Red]二、安裝openssl0.98e[/color]
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1.下載相關(guān)軟件包至/usr/local/src目錄?
??http://www.openssl.org/source/openssl-0.9.8e.tar.gz
2.安裝
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#cd?/usr/local/src
#tar?zxvf?openssl-0.9.8e.tar.gz
#cd?openssl-0.9.8e
#./config?shared?zlib
#make?
#make?test
#make?install
mv?/usr/bin/openssl?/usr/bin/openssl.OFF
mv?/usr/include/openssl?/usr/include/openssl.OFF
ln?-s?/usr/local/ssl/bin/openssl?/usr/bin/openssl
ln?-s?/usr/local/ssl/include/openssl?/usr/include/openssl
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3.配置庫文件搜索路徑
??#echo?"/usr/local/ssl/lib"?>>?/etc/ld.so.conf
??#ldconfig?-v
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4.查看openssl的版本號，以驗(yàn)正是否安裝正確
#openssl?version?-a
OpenSSL?0.9.8e?23?Feb?2007
built?on:?Sat?Mar?24?21:24:41?CST?2007
platform:?linux-elf
options:??bn(64,32)?md2(int)?rc4(idx,int)?des(ptr,risc1,16,long)?idea(int)?blowfish(idx)?
compiler:?gcc?-fPIC?-DOPENSSL_PIC?-DZLIB?-DOPENSSL_THREADS?-D_REENTRANT?-DDSO_DLFCN?-DHAVE_DLFCN_H?-DL_ENDIAN?-DTERMIO?-O3?-fomit-frame-pointer?-Wall?-DOPENSSL_BN_ASM_PART_WORDS?-DOPENSSL_IA32_SSE2?-DSHA1_ASM?-DMD5_ASM?-DRMD160_ASM?-DAES_ASM
OPENSSLDIR:?"/usr/local/ssl"
[color=Red]三、安裝Sendmail-8.14.0[/color]
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1.下載相關(guān)軟件包至/usr/local/src目錄
ftp://ftp.sendmail.org/pub/sendmail/sendmail.8.14.0.tar.gz
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2.先檢查本機(jī)是否已經(jīng)開啟了MTA，若有，先關(guān)閉并卸載它們,如:
#service?sendmail?stop
#rpm?-e?sendmail
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3.?安裝:
解壓原碼包?
#cd?/usr/local/src
#tar?zxvf?sendmail.8.14.0.tar.gz
#cd?sendmail-8.14.0
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編輯site.config.m4文件
#vi?devtools/Site/site.config.m4
添加：
APPENDDEF(`confENVDEF',`-DSASL=2')
APPENDDEF(`conf_sendmail_LIBS',`-lsasl2')
APPENDDEF(`confINCDIRS',`-I/usr/local/ssl/include')dnl
APPENDDEF(`conf_sendmail_ENVDEF',`-DSTARTTLS')
APPENDDEF(`conf_sendmail_ENVDEF',`-D_FFR_SMTP_SSL')
APPENDDEF(`conf_sendmail_LIBS',`-lssl?-lcrypto?-L/usr/local/ssl/lib')
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編譯并安裝
#sh?Build
#mkdir?-pv?/usr/man/man{1,8}
#sh?Build?install
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拷貝cf目錄至/usr/share/sendmail?
#mkdir?-pv?/usr/share/sendmail
#cp?-a?cf?/usr/share/sendmail
#cd?cf/cf
#cp?generic-linux.mc?sendmail.mc
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編輯sendmail.mc文件，添加如下內(nèi)容:
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include(`/usr/share/sendmail/cf/m4/cf.m4')dnl
FEATURE(`access_db')dnl
define(`confAUTH_MECHANISMS',`A?p?y')dnl
define(`confAUTH_MECHANISMS',`LOGIN?PLAIN?DIGEST-MD5')dnl
TRUST_AUTH_MECH(`LOGIN?PLAIN?DIGEST-MD5')dnl
define(`confCACERT_PATH',`/etc/mail/certs')dnl
define(`confCACERT',`/etc/mail/certs/cacert.pem')dnl
define(`confSERVER_CERT',`/etc/mail/certs/mysmtp.pem')dnl
define(`confSERVER_KEY',`/etc/mail/certs/mysmtp.pem')dnl
define(`confCLIENT_CERT',`/etc/mail/certs/mysmtp.pem')dnl
define(`confCLIENT_KEY',`/etd/mail/certs/mysmtp.pem')dnl
dnl?define(`confTLS_SRV_OPTIONS',`V')dnl
FEATURE(`no_default_msa')dnl
DAEMON_OPTIONS(`Port=25,Name=MTA,M=Ea')dnl
DAEMON_OPTIONS(`Family=inet,Port=465,Name=MTA-SSL,M=s')dnl
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安裝sendmail.cf及submit.cf文件
#make?install-cf
#cp?sendmail.mc?/etc/mail
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添加必須的用戶組(redhat9.0上，已經(jīng)存在此用戶和組）
#groupadd?–g?51?-r?smmsp
#useradd?–u?51?-r?-g?smmsp?-s?/sbin/nologin?smmsp?
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添加必要的配置文件
#cd?/etc/mail
#touch?aliases?access??virtusertable
添加接收郵件的域
#echo?"benet.org">local-host-names
#echo?"mail.benet.org">>local-host-names
配置轉(zhuǎn)發(fā)域(此步為常規(guī)步驟,為本機(jī)配置郵件轉(zhuǎn)發(fā)許可)
#echo?"localhost??RELAY"?>>?access
#echo?"127.0.0.1??RELAY"?>>?access
生成相應(yīng)的數(shù)據(jù)庫文件
#makemap?hash?access.db?<?access
#?makemap?hash?virtusertable?<?virtusertable
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改變相關(guān)目錄的權(quán)限，以保證安全（RedHat?9.0上已經(jīng)設(shè)置正確）
#mkdir?-pv?/var/spool/{mail,mqueue,clientqueue}
#chmod?775???????/var/spool/mail
#chown?root.mail?/var/spool/mail
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#chmod?755???????/var/spool/mqueue
#chown?root.mail?/var/spool/mqueue
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#chmod?770?????????/var/spool/clientmqueue
#chown?smmsp.smmsp?/var/spool/clientmqueue
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chmod?4555??????/usr/sbin/sendmail
chown?root.smmsp?/usr/sbin/sendmail
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[color=Red]四、為TLS生成證書：[/color]
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#cd?/etc/mail/certs/
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生成CA的簽名及證書
#?openssl?req?-new?-x509?-keyout?cakey.pem?-out?cacert.pem?-days?3650
Generating?a?1024?bit?RSA?private?key
...............................++++++
.....++++++
writing?new?private?key?to?'cakey.pem'
Enter?PEM?pass?phrase:??????<----此處輸入CA密碼
Verifying?-?Enter?PEM?pass?phrase:????<----重復(fù)上個密碼
-----
You?are?about?to?be?asked?to?enter?information?that?will?be?incorporated
into?your?certificate?request.
What?you?are?about?to?enter?is?what?is?called?a?Distinguished?Name?or?a?DN.
There?are?quite?a?few?fields?but?you?can?leave?some?blank
For?some?fields?there?will?be?a?default?value,
If?you?enter?'.',?the?field?will?be?left?blank.
-----
Country?Name?(2?letter?code)?[AU]:CN????<----此處為國家名
State?or?Province?Name?(full?name)?[Some-State]:HA????<----此處為地域（?。┟?
Locality?Name?(eg,?city)?[]:ZZ????<----此處為城市名
Organization?Name?(eg,?company)?[Internet?Widgits?Pty?Ltd]:BENET??<----此處為單位名
Organizational?Unit?Name?(eg,?section)?[]:????<----此處為部門名
Common?Name?(eg,?YOUR?name)?[]:????<----此處為你的名字或服務(wù)器的名字，也可省略
Email?Address?[]:redhat@benet.org????<----此處為管理郵件
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生成Sendmail的證書
#?openssl?req?-nodes?-new?-x509?-keyout?mysmtp.pem?-out?mysmtp.pem?-days?3650
Generating?a?1024?bit?RSA?private?key
..++++++
...................................++++++
writing?new?private?key?to?'mysmtp.pem'
-----
You?are?about?to?be?asked?to?enter?information?that?will?be?incorporated
into?your?certificate?request.
What?you?are?about?to?enter?is?what?is?called?a?Distinguished?Name?or?a?DN.
There?are?quite?a?few?fields?but?you?can?leave?some?blank
For?some?fields?there?will?be?a?default?value,
If?you?enter?'.',?the?field?will?be?left?blank.
-----
Country?Name?(2?letter?code)?[AU]:CN
State?or?Province?Name?(full?name)?[Some-State]:HA
Locality?Name?(eg,?city)?[]:ZZ
Organization?Name?(eg,?company)?[Internet?Widgits?Pty?Ltd]:BENET
Organizational?Unit?Name?(eg,?section)?[]:
Common?Name?(eg,?YOUR?name)?[]:
Email?Address?[]:redhat@benet.org
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查看證書內(nèi)容
#?openssl?x509?-noout?-text?-in?mysmtp.pem
Certificate:
????Data:
????????Version:?3?(0x2)
????????Serial?Number:
????????????e7:3a:cf:c4:2c:e9:71:8f
????????Signature?Algorithm:?sha1WithRSAEncryption
????????Issuer:?C=CN,?ST=HA,?L=ZZ,?O=BENET/emailAddress=redhat@benet.org
????????Validity
????????????Not?Before:?Mar?24?14:19:21?2007?GMT
????????????Not?After?:?Mar?21?14:19:21?2017?GMT
????????Subject:?C=CN,?ST=HA,?L=ZZ,?O=BENET/emailAddress=redhat@benet.org
????????Subject?Public?Key?Info:
????????????Public?Key?Algorithm:?rsaEncryption
????????????RSA?Public?Key:?(1024?bit)
????????????????Modulus?(1024?bit):
????????????????????00:f6:17:f8:27:be:9b:c6:b9:b0:b3:0b:0c:62:c1:
????????????????????7e:cd:19:80:62:b4:83:91:ec:a3:b1:83:df:77:6f:
????????????????????12:83:56:94:6c:e3:e0:5a:a7:20:75:60:d3:92:00:
????????????????????18:9a:e5:fc:3a:27:93:bc:10:60:4b:f3:d1:b4:43:
????????????????????5c:af:17:f9:de:72:04:3a:8e:12:f1:19:c5:11:28:
????????????????????9c:08:f6:fe:b0:db:e6:c5:8c:c1:c8:d2:86:f2:0a:
????????????????????d7:b3:a3:e3:08:d0:5b:8c:5a:03:d7:87:0d:4e:56:
????????????????????62:2b:54:3c:f7:ea:70:03:53:96:4d:bc:ac:f8:de:
????????????????????cd:2b:87:6f:24:79:d0:8b:a3
????????????????Exponent:?65537?(0x10001)
????????X509v3?extensions:
????????????X509v3?Subject?Key?Identifier:?
????????????????C7:1B:1C:D0:58:B2:A7:19:7F:F1:8C:DB:D0:C9:49:24:A4:BA:B3:FA
????????????X509v3?Authority?Key?Identifier:?
????????????????keyid:C7:1B:1C:D0:58:B2:A7:19:7F:F1:8C:DB:D0:C9:49:24:A4:BA:B3:FA
????????????????DirName:/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
????????????????serial:E7:3A:CF:C4:2C:E9:71:8F
????????????X509v3?Basic?Constraints:?
????????????????CA:TRUE
????Signature?Algorithm:?sha1WithRSAEncryption
????????a5:c0:58:52:f4:db:76:78:d3:05:d3:36:a9:7e:ef:05:4a:01:
????????93:3f:64:48:8a:66:36:20:25:c1:b2:93:b6:a4:05:1b:6e:55:
????????c6:21:ec:70:a1:41:d8:0f:cd:46:d6:8f:f2:e8:48:c2:0d:5f:
????????9e:2f:dd:af:61:f6:ca:08:16:20:7c:b5:e6:38:58:d8:e7:cd:
????????92:d9:35:00:93:70:5d:04:d0:4c:d0:33:e6:49:18:30:a7:1b:
????????0e:3b:d0:3f:82:ce:6e:03:da:96:32:7b:8a:69:9e:8e:0b:8b:
????????ab:ea:9a:40:c8:b3:a8:f5:62:a5:0e:ab:bf:24:47:aa:02:ef:
????????61:0f
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修改證書權(quán)限，如果沒有此步驟，啟動sendmail時會報starttls啟動錯誤
#chmod?400?mysmtp.pem
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[color=Orange]五、啟動并驗(yàn)正Sendmail[/color]
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1.執(zhí)行如下命令，查看sendmail是否sasl2方式的身份認(rèn)證（按我們?nèi)缟系牟襟E編譯安裝，sendmail是支持此認(rèn)證的）及starttls：
#?sendmail?-d0.1?-bv?root
Version?8.14.0
?Compiled?with:?DNSMAP?LOG?MATCHGECOS?MILTER?MIME7TO8?MIME8TO7
????????????????NAMED_BIND?NETINET?NETUNIX?NEWDB?PIPELINING?[color=Orange]SASLv2?[/color]SCANF
????????????????[color=Orange]STARTTLS[/color]?USERDB?XDEBUG
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============?SYSTEM?IDENTITY?(after?readcf)?============
??????(short?domain?name)?$w?=?mail
??(canonical?domain?name)?$j?=?mail.benet.org
?????????(subdomain?name)?$m?=?benet.org
??????????????(node?name)?$k?=?mail.benet.org
========================================================
root...?deliverable:?mailer?local,?user?root
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請查看執(zhí)行結(jié)果中是否顯示為橙色字體的部分。如果有，則可進(jìn)行以下步驟，否則，請檢查前面的編譯安裝過程是否有遺漏或錯誤之處,或者查看日志以檢查錯誤之所在。也可以運(yùn)行如下命令仔細(xì)檢查問題所在。
#sendmail?-O?loglevel=14?-bs
2.啟動sendmail,
#sendmail?-bd?-q30m
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注:Sendmail的命令參數(shù)的含義如下：
???-b：指定Sendmail在后臺運(yùn)行，并且監(jiān)聽端口25的請求。
???-d：指定Sendmail以Daemon方式運(yùn)行(守護(hù)進(jìn)程)。
???-q：當(dāng)Sendmail無法將郵件成功地發(fā)送到目的地時，它會將郵件保存在隊(duì)列里。該參數(shù)指定郵件在隊(duì)列里保存的時間。例子里的30m表示保留30分鐘。
3.查看Sendmail對于認(rèn)證及TLS的支持是否已經(jīng)打開
#?telnet?localhost?25
Trying?127.0.0.1...
Connected?to?localhost.
Escape?character?is?'^]'.
220?mail.benet.org?ESMTP?Sendmail?8.13.8/8.13.8;?Sun,?25?Mar?2007?01:46:08?+0800
[color=Blue]ehlo?localhost[/color]????<--此句為輸入的命令
250-mail.benet.org?Hello?localhost.localdomain?[127.0.0.1],?pleased?to?meet?you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-EXPN
250-VERB
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
[color=Orange]250-AUTH?LOGIN?PLAIN?DIGEST-MD5[/color]
[color=Orange]250-STARTTLS[/color]
250-DELIVERBY
250?HELP
?
請注意查看輸出中有沒有類同橙色的兩行。
[color=Red]六、開啟基于SSL的IMAP服務(wù)[/color]
1.檢查是否已經(jīng)安裝imap軟件包，如果沒有，請自行安裝
#rpm?-qa?|grep?imap
imap-2001a-18
imap-devel-2001a-18
2.開啟imaps服務(wù)
#chkconfig?imaps?on
#?chkconfig?--list?imaps
imaps???????????on
3.重新啟動xinetd服務(wù)
#service?xinet.d?restart
4.查看是否已經(jīng)監(jiān)聽相應(yīng)的993端口：
#netstat?-tnlp?|grep?:993
tcp????????0??????0?0.0.0.0:993?????????????0.0.0.0:*???????????????LISTEN??????32477/xinetd?
[color=Red]七、驗(yàn)正[/color]
1.使用outlook客戶端登錄，測試發(fā)信情況,注意如下設(shè)置：
?
?
2.查看日志
#tail?/var/log/maillog
Mar?25?03:58:55?mail?sendmail[1962]:?STARTTLS=server,?relay=[192.168.1.100],?version=TLSv1/SSLv3,?verify=NO,?cipher=RC4-MD5,?bits=128/128
Mar?25?03:58:55?mail?sendmail[1962]:?AUTH=server,?relay=[192.168.1.100],?authid=redhat,?mech=LOGIN,?bits=0
Mar?25?03:58:55?mail?sendmail[1962]:?l2OJwsnF001962:?from=<[email]redhat@benet.org[/email]>,?size=1700,?class=0,?nrcpts=1,?msgid=<003601c76ed5$6a012da0$6400a8c0@microsofde20f2>,?proto=ESMTP,?daemon=MTA-SSL,?relay=[192.168.1.100]
Mar?25?03:58:55?mail?sendmail[1963]:?l2OJwsnF001962:?to=<[email]root@benet.org[/email]>,?ctladdr=<[email]redhat@benet.org[/email]>?(500/500),?delay=00:00:00,?xdelay=00:00:00,?mailer=local,?pri=31953,?dsn=2.0.0,?stat=Sent
[color=Red]八、在本機(jī)命令行模式測試通過TLS發(fā)送郵件[/color]
#?[size=2]openssl?s_client?-connect?localhost:465[/size]
CONNECTED(00000003)
depth=0?/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
verify?error:num=18:self?signed?certificate
verify?return:1
depth=0?/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
verify?return:1
---
Certificate?chain
?0?s:/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
???i:/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
---
Server?certificate
-----BEGIN?CERTIFICATE-----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-----END?CERTIFICATE-----
subject=/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
issuer=/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
---
Acceptable?client?certificate?CA?names
/C=CN/ST=HA/L=ZZ/O=BENET/emailAddress=redhat@benet.org
---
SSL?handshake?has?read?1291?bytes?and?written?270?bytes
---
New,?TLSv1/SSLv3,?Cipher?is?DHE-RSA-AES256-SHA
Server?public?key?is?1024?bit
Compression:?NONE
Expansion:?NONE
SSL-Session:
????Protocol??:?TLSv1
????Cipher????:?DHE-RSA-AES256-SHA
????Session-ID:?F388B5DE25A652FDF29ED31D619913BFC0F9ED2F3B0FE005F22E1872715A4260
????Session-ID-ctx:?
????Master-Key:?15DE2147783606658382F967CADCD824E416E0FDCA1ECCCD459926C10668072DDC127C68033BD81DEC8FE55EFCEA8C57
????Key-Arg???:?None
????Start?Time:?1174755830
????Timeout???:?300?(sec)
????Verify?return?code:?18?(self?signed?certificate)
---
220?localhost.localdomain?ESMTP?Sendmail?8.14.0/8.14.0;?Sun,?25?Mar?2007?01:03:50?+0800
[color=Orange]mail?from:root@benet.org[/color]????[color=Blue]<----發(fā)信人[/color]
250?2.1.0?[email]root@benet.org[/email]...?Sender?ok
[color=Orange]rcpt?to:redhat@benet.org[/color]????[color=Blue]<----收信人[/color]
250?2.1.5?[email]redhat@benet.org[/email]...?Recipient?ok
[color=Orange]data[/color]??????????????????????????????????????[color=Blue]<----信件正文開始的命令[/color]354?Enter?mail,?end?with?"."?on?a?line?by?itself
[color=Purple]This?is?a?test!![/color]????????????????????????[color=Blue]<----信件內(nèi)容[/color]
[color=Orange].[/color]????????????????????????????????????????????[color=Blue]<----信件正文編輯結(jié)束命令，此時將會發(fā)送郵件[/color]
250?2.0.0?l2OHAIra032556?Message?accepted?for?delivery
[color=Orange]quit[/color]???????????????????????????????????????[color=Blue]<----退出命令[/color]
221?2.0.0?localhost.localdomain?closing?connection
closed
后記：本文是作者在成功實(shí)驗(yàn)的基礎(chǔ)上過程總結(jié)，其中還有著許多不成熟的地方，比如沒有為outlook生成一個Windows可以識別的證書并導(dǎo)入等等。希望各位有興趣的朋友給與補(bǔ)充，以作學(xué)習(xí)交流之用。謝謝！
[
?本帖最后由?marion?于?2007-3-26?07:06?編輯?
]
?
marion
回復(fù)于：2007-03-26 10:07:42
很少有朋友使用這種方式么？
?
abel
回復(fù)于：2007-03-26 10:20:07
引用：
原帖由?
marion
?于?2007-3-26?10:07?發(fā)表
很少有朋友使用這種方式么？?
這就不知了,一般?RH?預(yù)設(shè)安裝的?sendmail?基本上都有?complier?with?SSL
而一般的?qmail/postfix?就不知了
starttls?對於進(jìn)出中國的?mail?其實(shí)是有幫助的，只是多數(shù)人恐怕對這磈不夠了解
而且對?ssl?懷有恐懼?(就是了解的太少的恐懼)
?
marion
回復(fù)于：2007-03-26 10:24:15
或許我也知道的不夠多，謝謝abel兄的指點(diǎn)。繼續(xù)學(xué)習(xí)……
?
sosogh
回復(fù)于：2007-03-26 20:39:34
樓主?真有心??頂
?
marion
回復(fù)于：2007-03-27 18:41:36
正在測試使用Sendmail+MailScanner+Clamav和Sendmail+Mimedefang+Spamassassin,歡迎這方面有經(jīng)驗(yàn)的朋友來交流一下.
?
abel
回復(fù)于：2007-03-27 23:16:42
引用：
原帖由?
marion
?于?2007-3-27?18:41?發(fā)表
正在測試使用Sendmail+MailScanner+Clamav和Sendmail+Mimedefang+Spamassassin,歡迎這方面有經(jīng)驗(yàn)的朋友來交流一下.?
我會建議你用?mimedefang?solution,?若你對?perl?熟的話,若不熟那就前者吧
我目前用的方案是後者
?
marion
回復(fù)于：2007-03-28 10:11:29
引用：
原帖由?
abel
?于?2007-3-27?23:16?發(fā)表
我會建議你用?mimedefang?solution,?若你對?perl?熟的話,若不熟那就前者吧
我目前用的方案是後者?
再謝abel兄的關(guān)注及指點(diǎn)！
在Sendmail?SASL?TLS的基礎(chǔ)出上已經(jīng)測試成功MIMEdefang+Spamassassin+Clamav，整理后貼上來，望能再得到兄之指教，先附上日志。并歡迎各位來討論指正。
#tail?/var/log/maillog
Mar?25?09:34:01?mail?sendmail[1833]:?AUTH=server,?relay=[192.168.1.175],?authid=redhat,?mech=LOGIN,?bits=0
Mar?25?09:34:01?mail?sendmail[1833]:?l2P1Y0Yp001833:?from=<[email]redhat@benet.org[/email]>,?size=1206,?class=0,?nrcpts=1,?msgid=<001701c770db$ddf2e3e0$af01a8c0@dellfe18970b3a>,?proto=ESMTP,?daemon=MTA-SSL,?relay=[192.168.1.175]
Mar?25?09:34:01?mail?mimedefang.pl[1746]:?MDLOG,l2P1Y0Yp001833,mail_in,,,<[email]redhat@benet.org[/email]>,<[email]root@benet.org[/email]>,defangfang?
Mar?25?09:34:01?mail?sendmail[1833]:?l2P1Y0Yp001833:?Milter?delete?(noop):?header:?X-Spam-Score
Mar?25?09:34:01?mail?sendmail[1833]:?l2P1Y0Yp001833:?Milter?add:?header:?X-Scanned-By:?MIMEDefang?2.61?on?192.168.1.66
Mar?25?09:34:01?mail?imapd[1837]:?imaps?SSL?service?init?from?192.168.1.175
Mar?25?09:34:01?mail?sendmail[1836]:?l2P1Y0Yp001833:?to=<[email]root@benet.org[/email]>,?ctladdr=<[email]redhat@benet.org[/email]>?(500/500),?delay=00:00:00,?xdelay=00:00:00,?mailer=local,?pri=31504,?dsn=2.0.0,?stat=Sent
Mar?25?09:34:01?mail?imapd[1837]:?Login?user=redhat?host=[192.168.1.175]
[
?本帖最后由?marion?于?2007-3-28?10:17?編輯?
]
?
marion
回復(fù)于：2007-03-29 21:17:53
說明一下，本文章可以跟后來的那篇名稱更長的文章一起看。
正在學(xué)習(xí)abel兄的pam_mysql,有興趣的朋友過來交流一下。
?
marion
回復(fù)于：2007-04-20 09:05:54
測試使用MailScanner，有哪位朋友已經(jīng)成功實(shí)現(xiàn)且有現(xiàn)成的經(jīng)驗(yàn)之作嗎？貼出來學(xué)習(xí)一下。
?
diocorns
回復(fù)于：2007-05-11 15:42:28
這種方式對于有安全性要求的搭建還是很有用的，今晚試一下
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