Linux下mail服務器應用之郵件系統

v 郵件應用協議

SMTP,:(Simple Mail Transmission Protocol)簡單郵件傳輸協議,TCP 25端口,smtps

POP3,(Post Office Protocol)第3版郵局協議,TCP 110端口,pops

IMAP4,(Internet Mail Access Protocol)因特網消息訪問協議,TCP 143端口,imaps

Mine    MIME:(Multipurpose Internet Mail Extensions)多用途、多功能互聯網郵件擴展:以文本的方式對二進制數據做重新編碼,並能夠實現以文本協議發送二進制數據。常用編碼編碼方式:base64.

v 商業郵件系統

ü Exchange:微軟公司的重量級產品,與Windows系列軟件產品相集成,協作性較好

ü Notes/DominoIBM公司的商業電子郵件和辦公協作軟件產品,功能豐富、強大,提供跨平臺支持

v 開源郵件系統

ü Sendmail:資格最古老,運行穩定,但安全性欠佳

ü Qmail:有更好的執行效率,配置、管理也很方便

ü Postfix:兼容Sendmail,採用模塊化設計,在投遞效率、穩定性、服務性能及安全性方面表現優秀

v Sendmail:提供郵件發送服務(SMTP

v Dovecot:提供郵件收取服務(POP3

v Outlook Express:用於收發信的客戶端工具

郵件系統角色

MUA(郵件用戶代理)、MTA(郵件傳輸代理)、MDA(郵件分發代理)、MAA(郵件訪問代理)

MUA: (Mail User Agent): 郵件用戶代理:就是用戶與電子郵件系統的接口,在大多數情況下就是在郵件客戶端上運行的程序。

Windows:outlook express foxmail

Lnux:Thunderbird(雷鳥) evolution

MTA (Mail Transfer Agent):郵件傳輸代理:主要功能發送和接收郵件,同時向發件人報告郵件的傳送情況。根據用途可將郵件服務器分爲郵件服務器(SMTP 服務器)和接受郵件服務器(POP3/IMAP4 服務器)。

      windows:電子郵件服務 ,exchange server,mdaemon,lotus notes Linux:sendmail(50%),postfix,qmail

MDA (Mail Delivery Agent):郵件投遞代理:到本地郵局之後,將郵件放在用戶的郵箱中。可以是MTA 下面的一個小程序,也可以單獨是一個軟件例如procmail,maildrop。

MAA:(Mail Access Agent)(接受服務器)郵件訪問代理:代爲MUA 提供訪問message store 並接收郵件功能的一臺IMAP/POP3 服務器,常用courrier-imap ,dovecot。

郵件安全:

1.垃圾郵件 反垃圾郵件 SpamAssassin,認證(地址,賬號),正向解析和反向

2.病毒 clamav(查毒)特徵代碼庫

3.sendmail 郵件呼叫器 mailscanner

SASL:(Simple Authorization Secure Layer)簡單認證安全層協議,用於爲沒有提供認證功能的協議提供認證功能。軟件包:cyus-sasl,進程:saslauthd。

整合STMP,clainav(掃描病毒),SpamAssassin(apache 提供,掃描垃圾郵件)的工具成稱之爲caller(調用器)。常見調用器Caller:mimedefang Mailscanner amavisd-new。

郵箱類型:

mbox 所有郵件放在同一個文件中,新郵件直接追加在文件後面。

maildir 建一個目錄,每一封郵件被當成一個單獨文件存放在目錄裏

redhat 默認使用mbox 方式,sendmail 默認使用mbox,postfix 默認兩種都支持。

SMIME:提供端到端的郵件加密解密協議。

sendmail郵件系統

sendmail所需軟件包:

sendmail-8.13.8-2.el5.i386.rpm          #必選,主程序包

sendmail-cf-8.13.8-2.el5.i386.rpm      #必選,配置文件包

sendmail-devel-8.13.8-2.el5.i386.rpm

sendmail-doc-8.13.8-2.el5.i386.rpm

m4-1.4.5-3.el5.1.i386.rpm            #m4工具包

Sendmail服務軟件包

sendmail-8.13.8-2.el5.i386.rpmsendmail服務的主程序包,服務器端必須安裝該軟件包。
sendmail-cf-8.13.8-2.el5.i386.rpmsendmail宏文件包
sendmail-devel-8.13.8-2.el5.i386.rpmsendmail服務器開發工具軟件包
sendmail-doc-8.13.8-2.el5.i386.rpmsendmail服務器的說明文檔
m4-1.4.5-3.el5.1.i386.rpm宏處理過慮軟件包
dovecot-1.0-1.2.rc15.el5.i386.rpm接收郵件軟件包,安裝時需要注意安裝順序

Sendmail相關配置文檔

sendmail.cfsendmail核心配置文件,位於/etc/mail/sendmail/sendmail.cf

sendmail.mcsendmail提供sendmail文件模板,通過編輯此文件後再使用m4工具將結果導入sendmail.cf完成配置sendmail核心配置文件,降低配置複雜度,位於/etc/mail/sendmail.mc

local-host-name定義收發郵件服務器的域名和主機別名,位於/etc/mail/local-host-name

access.db用來設置sendmail服務器爲哪些主機進行轉發郵件,位於/etc/mail/access.db

aliases.db:用來定義郵箱別名,位於/etc/mail/aliases.db

virtusertable.db用來設置虛擬賬戶,位於/etc/mail/virtusertable.db

圖形化webmin管理sendmail服務器:

使用webmin管理linux的sendmail服務

到webmin的官方網站下載webmin軟件:

Webmin官網:http://www.webmin.com/

配置步驟:

我下載的是webmin-1.580-1.noarch.rpm我把它放到/root目錄下了。

[root@mail ~]# rpm -ivh webmin-1.580-1.noarch.rpm

[root@mail ~]# service webmin start

[root@mail ~]# service webmin status

Webmin (pid 5388) is running

注:webmin默認端口爲10000.

其它資料:

①.linux中啓動sendmail很慢的解決方法

linux 系統啓動時,發現sendmail啓動很慢,發現是/etc/hosts文件沒有添另hostname名稱.

1、修改之前

127.0.0.1 localhost

2、修改之後

127.0.0.1 localhost mailserver

重啓系統,發現sendmail啓動的進候變快了.

②.sendmail錯誤cannot open `/usr/share/sendmail-cf/m4/cf.m4

配置sendmail,生成配置文件時,出現以下錯誤:

[root@server mail]# m4 sendmail.mc >sendmail.cf

sendmail.mc:10: m4: cannot open `/usr/share/sendmail-cf/m4/cf.m4': No such file or directory

通過安裝sendmail-cf解決

[root@server mail]# yum -y install sendmail-cf

③.問題:使用 命令 mail -s "sdf" [email protected] </root/install.log 發不了郵件。

查看日誌報錯:/var/log/maillog

My unqualified host name (localhost) unknown; sleeping for retry

問題原因:sendmail配置文件有問題。

修改sendmail配置文件

#Dj$w.Foo.COM

Djlocalhost.localdomain ------------>添加

重啓sendmail

 

sendmail郵件系統的一個案例

實驗拓撲

:在mail.bj.com安裝sendmail並進行簡單配置

[root@mail ~]# mkdir /mnt/cdrom

[root@mail ~]# mount /dev/cdrom /mnt/cdrom/

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@mail ~]# cd /mnt/cdrom/Server/

[root@mail Server]# rpm -qa |grep -E "sendmail|m4"

m4-1.4.5-3.el5.1

sendmail-8.13.8-2.el5

[root@mail Server]# rpm -ivh sendmail-

sendmail-8.13.8-2.el5.i386.rpm          #主程序包

sendmail-cf-8.13.8-2.el5.i386.rpm           #配置工具包

sendmail-devel-8.13.8-2.el5.i386.rpm

sendmail-doc-8.13.8-2.el5.i386.rpm

[root@junjie Server]# rpm -ivh sendmail-cf-8.13.8-2.el5.i386.rpm

[root@mail Server]# cd /etc/mail/

[root@mail mail]# ls

Makefile     domaintable.db    mailertable.db submit.mc

access       helpfile          sendmail.cf     trusted-users

access.db    local-host-names sendmail.mc     virtusertable

domaintable mailertable       submit.cf       virtusertable.db

編輯主要配置文件:

[root@mail mail]# vim sendmail.mc

116 DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0, Name=MTA')dnl

[root@mail ~]# netstat -tupln |grep sendmail

tcp        0 0 127.0.0.1:25 0.0.0.0:*                   LISTEN      3407/sendmail: acce

[root@mail ~]# service sendmail restart

[root@mail ~]# netstat -tupln |grep sendmail

tcp        0 0 0.0.0.0:25 0.0.0.0:*                   LISTEN      4440/sendmail: acce

中繼文件:

[root@mail mail]# vim access #增加10,11,12行

9 Connect:127.0.0.1 RELAY

10 Connect:10.106.6                        RELAY

11 bj.com                                  OK

12 sh.com                                  RELAY

表明郵件服務器的域名:

[root@mail mail]# vim local-host-names

增加:bj.com

重新啓動sendmail服務器:

[root@mail mail]# chkconfig sendmail on

[root@mail mail]# service sendmail restart

Shutting down sm-client:                                   [ OK ]

Shutting down sendmail:                                    [ OK ]

Starting sendmail:                                         [ OK ]

Starting sm-client:                                        [ OK ]

新建賬戶:

[root@mail ~]# useradd user1

[root@mail ~]# useradd user2

[root@mail ~]# echo "123" |passwd --stdin user1

[root@mail ~]# echo "123" |passwd --stdin user2

:搭建dns服務器,並作相關配置:

[root@mail ~]# cd /mnt/cdrom/Server/

[root@mail Server]# rpm -ivh bind-9.3.4-10.P1.el5.i386.rpm

[root@mail Server]# rpm -ivh bind-chroot-9.3.4-10.P1.el5.i386.rpm

[[email protected]]# rpm -ivh caching-nameserver-9.3.4-10.P1.el5.i386.rpm

[root@mail Server]# cd /var/named/chroot/etc/

[root@mail etc]# ll

[root@mail etc]# cp -p named.caching-nameserver.conf named.conf

[root@mail etc]# vim named.conf

15         listen-on port 53 { any; };

27         allow-query     { any; };

36         match-clients      { any; };

37         match-destinations { any; };

[root@mail etc]# vim named.rfc1912.zones

增加以下幾行:

20 zone "bj.com" IN {

21         type master;

22 file "bj.com.db";

23 allow-update { none; };

24 };

[root@mail etc]# cd ../var/named/

[root@mail named]# ll

[root@mail named]# cp -p localhost.zone bj.com.db

[root@mail named]# vim bj.com.db

2 @               IN SOA ns.bj.com.       root (

9 @               IN NS           ns.bj.com.

10 ns              IN A            10.106.6.254

11 mail            IN A            10.106.6.254

12 pop3            IN CNAME        mail

13 smtp            IN CNAME        mail

14 @               IN MX 10        mail

[root@mail named]# chkconfig named on

[root@mail named]# service named start

Starting named: [ OK ]

:客戶端測試dns解析,進行簡單配置:

:進行配置,並安裝接收dovecot服務器:

進行系統配置:

[root@mail named]# vim /etc/resolv.conf

1 nameserver 10.106.6.254

[root@mail named]# vim /etc/sysconfig/network

3 HOSTNAME=mail.bj.com

[root@mail named]# vim /etc/hosts

127.0.0.1      mail.bj.com localhost.localdomain localh    ost

[root@mail named]#init 6

[root@mail ~]# yum install -y dovecot

[root@mail ~]# chkconfig dovecot on

[root@mail ~]# service dovecot start

Starting Dovecot Imap:                                     [ OK ] [root@mail ~]# netstat -tupln |grep dovecot

(110,143,993(imaps),995(pop3s))

:bj.com客戶端發送信息測試:(使用foxmail)

user1給user1發送信息:

user1給user2發送信息:

日誌分析:

Mar 23 10:45:50 mail sendmail[3938]: q2N2jovd003938: from=<[email protected]>, size=1430, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]

Mar 23 10:45:50 mail sendmail[3939]: q2N2jovd003938: to=<[email protected]>, ctladdr=<[email protected]> (501/501), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31594, dsn=2.0.0, stat=Sent

Mar 23 10:46:08 mail dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 10:46:09 mail dovecot: POP3(user1): Disconnected: Logged out top=0/0, retr=1/1696, del=0/1, size=1679

Mar 23 10:58:20 mail sendmail[4012]: q2N2wKKs004012: from=<[email protected]>, size=1481, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]

Mar 23 10:58:20 mail sendmail[4013]: q2N2wKKs004012: to=<[email protected]>, ctladdr=<[email protected]> (501/501), delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31645, dsn=2.0.0, stat=Sent

Mar 23 10:59:09 mail dovecot: pop3-login: Aborted login: user=<[email protected]>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 10:59:09 mail dovecot: pop3-login: Login: user=<user2>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 10:59:09 mail dovecot: POP3(user2): Disconnected: Logged out top=0/0, retr=1/1748, del=0/2, size=3448

:配置mail.sh.com上海服務器:

安裝sendmail

[root@mail ~]# mkdir /mnt/cdrom

[root@mail ~]# mount /dev/cdrom /mnt/cdrom/

[root@mail ~]# cd /mnt/cdrom/Server/

[root@mail Server]# rpm -qa |grep -E "sendmail|m4"

[root@junjie Server]# rpm -ivh sendmail-cf-8.13.8-2.el5.i386.rpm

[root@mail Server]# cd /etc/mail/

[root@mail mail]# ls

編輯主要配置文件:

[root@mail mail]# vim sendmail.mc

116 DAEMON_OPTIONS(`Port=smtp,Addr=0.0.0.0, Name=MTA')dnl

[root@mail ~]# netstat -tupln |grep sendmail

tcp        0 0 127.0.0.1:25                0.0.0.0:*                   LISTEN      3607/sendmail: acce

[root@mail ~]# service sendmail restart

[root@mail ~]# netstat -tupln |grep sendmail

tcp        0 0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      3528/sendmail: acce

中繼文件:

[root@mail mail]# vim access #增加10,11,12行

9 Connect:127.0.0.1 RELAY

10 Connect:10.106.6                        RELAY

11 sh.com                                  OK

12 bj.com                                  RELAY

表明郵件服務器的域名:

[root@mail mail]# vim local-host-names

增加:sh.com

重新啓動sendmail服務器:

[root@mail mail]#chkconfig sendmail on

[root@mail mail]# service sendmail restart

Shutting down sm-client:                                   [ OK ]

Shutting down sendmail:                                    [ OK ]

Starting sendmail:                                         [ OK ]

Starting sm-client:                                        [ OK ]

新建賬戶:

[root@mail ~]# useradd user3

[root@mail ~]# useradd user4

[root@mail ~]# echo "123" |passwd --stdin user3

[root@mail ~]# echo "123" |passwd --stdin user4

:搭建mail.sh.com的dns服務器,並作相關配置:

[root@mail ~]# cd /mnt/cdrom/Server/

[root@mail Server]# rpm -ivh bind-9.3.4-10.P1.el5.i386.rpm

[root@mail Server]# rpm -ivh bind-chroot-9.3.4-10.P1.el5.i386.rpm

[[email protected]]# rpm -ivh caching-nameserver-9.3.4-10.P1.el5.i386.rpm

[root@mail Server]# cd /var/named/chroot/etc/

[root@mail etc]# ll

[root@mail etc]# cp -p named.caching-nameserver.conf named.conf

[root@mail etc]# vim named.conf

15         listen-on port 53 { any; };

27   allow-query     { any; };

36         match-clients      { any; };

37         match-destinations { any; };

[root@mail etc]# vim named.rfc1912.zones

增加以下幾行:

20 zone "sh.com" IN {

21 type master;

22 file "sh.com.db";

23 allow-update { none; };

24 };

[root@mail etc]# cd ../var/named/

[root@mail named]# ll

[root@mail named]# cp -p localhost.zone sh.com.db

[root@mail named]# vim sh.com.db

2 @               IN SOA ns.sh.com.       root (

9 @               IN NS           ns.sh.com.

10 ns              IN A            10.106.6.253

11 @               IN MX 10        mail

12 mail            IN A            10.106.6.253

13 pop3            IN CNAME        mail

14 smtp            IN CNAME        mail

[root@mail named]# chkconfig named on

[root@mail named]# service named start

Starting named: [ OK ]

客戶端測試dns解析:

:在sh.com進行系統配置,並安裝接收服務器:

[root@mail named]# vim /etc/resolv.conf

1 nameserver 10.106.6.253

[root@mail named]# vim /etc/sysconfig/network

3 HOSTNAME=mail.sh.com

[root@mail named]# vim /etc/hosts

127.0.0.1      mail.sh.com localhost.localdomain localh    ost

[root@mail named]#init 6

安裝接受服務器:

[root@mail ~]# yum install -y dovecot

[root@mail ~]# chkconfig dovecot on

[root@mail ~]# service dovecot start

Starting Dovecot Imap:                                     [ OK ] [root@mail ~]# netstat -tupln |grep dovecot

(110,143,993(imaps),995(pop3s))

:sh.com的客戶端測試,user3給user4發信息:

:做dns轉發和配置反向解析

在mail.bj.com上做dns轉發和反向解析:

[root@mail ~]# cd /var/named/chroot/etc/

[root@mail etc]# vim named.conf

28         forwarders      { 10.106.6.253; };

[root@mail etc]# rndc reload

server reload successful

[root@mail etc]# vim named.rfc1912.zones

55 zone "6.106.10.in-addr.arpa" IN {

56 type master;

57 file "10.106.6.db";

58 allow-update { none; };

59 };

[root@mail etc]# cd ../var/named/

[root@mail named]# ll

[root@mail named]# cp -p named.local 10.106.6.db

[root@mail named]# vim 10.106.6.db

254     IN PTR     mail.bj.com.

153     IN PTR     mail.sh.com.

[root@mail named]# rndc reload

server reload successful

在mail.sh.com上做dns轉發和反向解析:

[root@mail ~]# cd /var/named/chroot/etc/

[root@mail etc]# vim named.conf

28         forwarders      { 10.106.6.254; };

[root@mail etc]# rndc reload

server reload successful

[root@mail etc]# vim named.rfc1912.zones

55 zone "6.106.10.in-addr.arpa" IN {

56 type master;

57 file "10.106.6.db";

58 allow-update { none; };

59 };

[root@mail etc]# cd ../var/named/

[root@mail named]# ll

[root@mail named]# cp -p named.local 10.106.6.db

[root@mail named]# vim 10.106.6.db

254     IN PTR     mail.bj.com.

153     IN      PTR mail.sh.com.

[root@mail named]# rndc reload

server reload successful

? :測試通信情況

(bj.com的客戶[email protected]與sh.com的客戶[email protected]通信)

? :監控的日誌信息:

mail.bj.com的日誌信息:

[root@mail ~]# tail -f /var/log/maillog

Mar 23 15:46:07 mail dovecot: pop3-login: Aborted login: user=<[email protected]>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:46:07 mail dovecot: pop3-login: Login: user=<user2>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:46:07 mail dovecot: POP3(user2): Disconnected: Logged out top=0/0, retr=0/0, del=0/3, size=5025

Mar 23 15:46:13 mail sendmail[2298]: q2N7kCbh002298: from=<[email protected]>, size=1458, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]

Mar 23 15:46:16 mail sendmail[2300]: q2N7kCbh002298: to=<[email protected]>, ctladdr=<[email protected]> (500/500), delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=121458, relay=mail.sh.com. [10.106.6.253], dsn=2.0.0, stat=Sent (q2N8W6jM003583 Message accepted for delivery)

Mar 23 15:48:38 mail sendmail[2307]: q2N7mc6a002307: from=<[email protected]>, size=3353, class=0, nrcpts=1, msgid=<001a01cd08cf$bcf83cd0$c8066a0a@hp3aea877158e2>, proto=ESMTP, daemon=MTA, relay=[10.106.6.253]

Mar 23 15:48:38 mail sendmail[2308]: q2N7mc6a002307: to=<[email protected]>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33514, dsn=2.0.0, stat=Sent

Mar 23 15:48:54 mail dovecot: pop3-login: Aborted login: user=<[email protected]>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:48:54 mail dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:48:54 mail dovecot: POP3(user1): Disconnected: Logged out top=0/0, retr=1/3623, del=0/1, size=3606

Mar 23 15:51:04 mail sendmail[2320]: q2N7p4Pg002320: from=<[email protected]>, size=1470, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]

Mar 23 15:51:04 mail sendmail[2322]: q2N7p4Pg002320: to=<[email protected]>, ctladdr=<[email protected]> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=121470, relay=mail.sh.com. [10.106.6.253], dsn=2.0.0, stat=Sent (q2N8aucK003603 Message accepted for delivery)

Mar 23 15:52:25 mail sendmail[2325]: q2N7qPlW002325: from=<[email protected]>, size=3514, class=0, nrcpts=1, msgid=<002401cd08d0$4378c360$c8066a0a@hp3aea877158e2>, proto=ESMTP, daemon=MTA, relay=[10.106.6.253]

Mar 23 15:52:25 mail sendmail[2326]: q2N7qPlW002325: to=<[email protected]>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33675, dsn=2.0.0, stat=Sent

Mar 23 15:52:34 mail dovecot: pop3-login: Aborted login: user=<[email protected]>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:52:34 mail dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254

Mar 23 15:52:34 mail dovecot: POP3(user1): Disconnected: Logged out top=0/0, retr=1/3786, del=0/2, size=7375

mail.sh.com的日誌信息:

[root@mail ~]# tail -f /var/log/maillog

Mar 23 16:24:06 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253

Mar 23 16:24:06 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0

Mar 23 16:24:07 mail dovecot: pop3-login: Login: user=<user4>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253

Mar 23 16:24:07 mail dovecot: POP3(user4): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0

Mar 23 16:32:07 mail sendmail[3583]: q2N8W6jM003583: from=<[email protected]>, size=1617, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=mail.bj.com [10.106.6.254]

Mar 23 16:32:08 mail sendmail[3584]: q2N8W6jM003583: to=<[email protected]>, delay=00:00:01, xdelay=00:00:01, mailer=local, pri=31791, dsn=2.0.0, stat=Sent

Mar 23 16:32:51 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253

Mar 23 16:32:51 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=1/1898, del=1/1, size=1881

Mar 23 16:34:29 mail sendmail[3595]: q2N8YTvQ003595: from=<[email protected]>, size=3193, class=0, nrcpts=1, msgid=<001a01cd08cf$bcf83cd0$c8066a0a@hp3aea877158e2>, proto=SMTP, daemon=MTA, relay=[10.106.6.200]

Mar 23 16:34:29 mail sendmail[3597]: q2N8YTvQ003595: to=<[email protected]>, ctladdr=<[email protected]> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=123193, relay=mail.bj.com. [10.106.6.254], dsn=2.0.0, stat=Sent (q2N7mc6a002307 Message accepted for delivery)

Mar 23 16:36:56 mail sendmail[3603]: q2N8aucK003603: from=<[email protected]>, size=1629, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=mail.bj.com [10.106.6.254]

Mar 23 16:36:56 mail sendmail[3604]: q2N8aucK003603: to=<[email protected]>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31803, dsn=2.0.0, stat=Sent

Mar 23 16:37:04 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253

Mar 23 16:37:04 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=1/1909, del=1/1, size=1892

Mar 23 16:38:16 mail sendmail[3611]: q2N8cGVM003611: from=<[email protected]>, size=3354, class=0, nrcpts=1, msgid=<002401cd08d0$4378c360$c8066a0a@hp3aea877158e2>, proto=SMTP, daemon=MTA, relay=[10.106.6.200]

Mar 23 16:38:16 mail sendmail[3613]: q2N8cGVM003611: to=<[email protected]>, ctladdr=<[email protected]> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=123354, relay=mail.bj.com. [10.106.6.254], dsn=2.0.0, stat=Sent (q2N7qPlW002325 Message accepted for delivery)

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