MTA没有启动?

MTA没有启动?

我跑过去Linux BeagleBoard-xM 3.12.5-armv7-x10 #1 SMP Fri Dec 13 03:06:20 UTC 2013 armv7l armv7l armv7l GNU/Linux,我的手机里/var/log/syslog就被这样的信息淹没了Jan 11 10:21:09 BeagleBoard-xM sm-msp-queue[8036]: s0AJ66SY002027: to=root, ctladdr=root (0/0), delay=14:15:03, xdelay=00:00:00, mailer=relay, pri=2011764, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]

当我关闭 sendmailapt-get remove sendmail并重新启动时,我感到非常惊讶。我检查了进程以确保 sendmail 确实不是跑步:

F   UID   PID  PPID PRI  NI    VSZ   RSS WCHAN  STAT TTY        TIME COMMAND
4     0     1     0  20   0   2996  1936 poll_s Ss   ?          0:08 /sbin/init
1     0     2     0  20   0      0     0 kthrea S    ?          0:00 [kthreadd]
1     0     3     2  20   0      0     0 smpboo S    ?          0:00 [ksoftirqd/0]
1     0     4     2  20   0      0     0 worker S    ?          0:00 [kworker/0:0]
1     0     5     2   0 -20      0     0 worker S<   ?          0:00 [kworker/0:0H]
1     0     6     2  20   0      0     0 worker S    ?          0:00 [kworker/u2:0]
1     0     7     2 -100  -      0     0 smpboo S    ?          0:00 [migration/0]
1     0     8     2  20   0      0     0 rcu_gp S    ?          0:00 [rcu_bh]
1     0     9     2  20   0      0     0 rcu_gp S    ?          0:01 [rcu_sched]
1     0    10     2   0 -20      0     0 rescue S<   ?          0:00 [khelper]
5     0    11     2  20   0      0     0 devtmp S    ?          0:00 [kdevtmpfs]
1     0    12     2   0 -20      0     0 rescue S<   ?          0:00 [netns]
1     0    13     2   0 -20      0     0 rescue S<   ?          0:00 [writeback]
1     0    15     2   0 -20      0     0 rescue S<   ?          0:00 [kintegrityd]
1     0    16     2   0 -20      0     0 rescue S<   ?          0:00 [bioset]
1     0    17     2   0 -20      0     0 rescue S<   ?          0:00 [kblockd]
1     0    18     2   0 -20      0     0 rescue S<   ?          0:00 [ata_sff]
1     0    19     2  20   0      0     0 hub_th S    ?          0:00 [khubd]
1     0    20     2 -51   -      0     0 irq_th S    ?          0:00 [irq/72-i2c.10]
1     0    21     2  20   0      0     0 worker S    ?          0:00 [kworker/u2:1]
1     0    24     2 -51   -      0     0 irq_th S    ?          0:00 [irq/73-i2c.11]
1     0    25     2 -51   -      0     0 irq_th S    ?          0:00 [irq/77-i2c.12]
1     0    28     2   0 -20      0     0 rescue S<   ?          0:00 [edac-poller]
1     0    29     2   0 -20      0     0 rescue S<   ?          0:00 [devfreq_wq]
1     0    30     2   0 -20      0     0 rescue S<   ?          0:00 [rpciod]
1     0    31     2  20   0      0     0 watchd S    ?          0:00 [khungtaskd]
1     0    32     2  20   0      0     0 kswapd S    ?          0:00 [kswapd0]
1     0    33     2  20   0      0     0 fsnoti S    ?          0:00 [fsnotify_mark]
1     0    34     2   0 -20      0     0 rescue S<   ?          0:00 [nfsiod]
1     0    35     2   0 -20      0     0 rescue S<   ?          0:00 [bioset]
1     0    36     2   0 -20      0     0 rescue S<   ?          0:00 [crypto]
1     0    47     2   0 -20      0     0 rescue S<   ?          0:00 [kthrotld]
1     0    48     2   0 -20      0     0 rescue S<   ?          0:00 [OMAP UART0]
1     0    49     2   0 -20      0     0 rescue S<   ?          0:00 [OMAP UART1]
1     0    50     2   0 -20      0     0 rescue S<   ?          0:00 [OMAP UART2]
1     0    51     2   0 -20      0     0 rescue S<   ?          0:00 [OMAP UART3]
1     0    52     2 -51   -      0     0 irq_th S    ?          0:00 [irq/23-TWL4030-]
1     0    53     2  20   0      0     0 kthrea S    ?          0:00 [spi1]
1     0    54     2  20   0      0     0 kthrea S    ?          0:00 [spi2]
1     0    55     2  20   0      0     0 kthrea S    ?          0:00 [spi3]
1     0    56     2  20   0      0     0 kthrea S    ?          0:00 [spi4]
1     0    57     2   0 -20      0     0 rescue S<   ?          0:00 [binder]
1     0    58     2  20   0      0     0 mmc_qu S    ?          0:01 [mmcqd/0]
1     0    59     2   0 -20      0     0 rescue S<   ?          0:00 [deferwq]
1     0   102     2   0 -20      0     0 worker S<   ?          0:00 [kworker/0:1H]
1     0   116     2  20   0      0     0 kjourn S    ?          0:00 [jbd2/mmcblk0p2-]
1     0   117     2   0 -20      0     0 rescue S<   ?          0:00 [ext4-rsv-conver]
1     0   267     1  20   0   2480  1172 poll_s S    ?          0:02 upstart-udev-bridge --daemon
5     0   272     1  20   0   9932  1504 SyS_ep Ss   ?          0:00 /lib/systemd/systemd-udevd --daemon
5   102   327     1  20   0   3112  1256 SyS_ep Ss   ?          0:01 dbus-daemon --system --fork
5     0   342     1  20   0   3224  1256 poll_s Ss   ?          0:00 /usr/sbin/bluetoothd
4     0   348     1  20   0   3052  1288 SyS_ep Ss   ?          0:00 /lib/systemd/systemd-logind
5     0   359     2  10 -10      0     0 rfcomm S<   ?          0:00 [krfcommd]
5   101   361     1  20   0  29332  1164 poll_s Sl   ?          0:00 rsyslogd -c5
5   104   368     1  20   0   2692  1128 poll_s S    ?          0:00 avahi-daemon: running [BeagleBoard-xM.local]
1   104   369   368  20   0   2692   356 unix_s S    ?          0:00 avahi-daemon: chroot helper
4     0   386     1  20   0   6428  2432 SyS_ep Ss   ?          0:00 /usr/sbin/cupsd -F
4     0   405     1  20   0   6704  2264 poll_s Ss   ?          0:00 /usr/sbin/cups-browsed
4     0   548     1  20   0   3368   712 n_tty_ Ss+  tty4       0:00 /sbin/getty -8 38400 tty4
4     0   550     1  20   0   3368   712 n_tty_ Ss+  tty5       0:00 /sbin/getty -8 38400 tty5
4     0   560     1  20   0   3368   712 n_tty_ Ss+  tty2       0:00 /sbin/getty -8 38400 tty2
4     0   562     1  20   0   3368   712 n_tty_ Ss+  tty3       0:00 /sbin/getty -8 38400 tty3
4     0   568     1  20   0   3368   712 n_tty_ Ss+  tty6       0:00 /sbin/getty -8 38400 tty6
4     0   621     1  20   0  24992  2400 poll_s Ssl  ?          0:00 gdm
1     0   622     1  20   0   2324   824 hrtime Ss   ?          0:00 cron
4     0   681   621  20   0  34496  2996 poll_s Sl   ?          0:00 /usr/lib/gdm/gdm-simple-slave --display-id /org/gnome/DisplayManager/Displays/_0
4     0   704   681  20   0  18620  9276 poll_s Ss+  tty7       0:00 /usr/bin/X :0 -background none -verbose -auth /var/run/gdm/auth-for-gdm-U58lKS/database -seat seat0 -nolisten tcp vt7
4     0   707     1  20   0  32604  3040 poll_s Sl   ?          0:00 /usr/lib/accountsservice/accounts-daemon
4     0   713     1  20   0  32548  3540 poll_s Sl   ?          0:00 /usr/lib/policykit-1/polkitd --no-debug
1     0   717     2  20   0      0     0 worker S    ?          0:00 [kworker/0:2]
4     0   765   681  20   0  27592  3528 poll_s Sl   ?          0:00 gdm-session-worker [pam/gdm-launch-environment]
1     0   779     1  20   0   2452   988 poll_s S    ?          0:00 upstart-socket-bridge --daemon
1     0   783     1  20   0   2884  1416 poll_s S    ?          0:00 upstart-file-bridge --daemon
1     0   801     2  20   0      0     0 kaudit S    ?          0:00 [kauditd]
1     0   818     1  20   0   3968  2100 poll_s Ss   ?          0:00 dhclient -1 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases eth0
4     0   914     1  20   0   5592  2060 poll_s Ss   ?          0:00 /usr/sbin/sshd -D
4   111   938   765  20   0  18472  4608 poll_s Ss   ?          0:00 /usr/bin/gnome-session --autostart /usr/share/gdm/greeter/autostart
1   111   944     1  20   0   2776   488 poll_s S    ?          0:00 /usr/bin/dbus-launch --exit-with-session /usr/bin/gnome-session --autostart /usr/share/gdm/greeter/autostart
4     0   964     1  20   0   6452  2904 poll_s Ss   ?          0:00 /usr/sbin/modem-manager
1   111   967     1  20   0   2856   872 SyS_ep Ss   ?          0:00 //bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
1     0   971     1  20   0   7268  3220 poll_s Ss   ?          0:01 /usr/sbin/apache2 -k start
5     0   990     1  20   0  39240  5168 poll_s Ssl  ?          0:00 NetworkManager
0   111   995     1  20   0  40488  2728 poll_s Sl   ?          0:00 /usr/lib/at-spi2-core/at-spi-bus-launcher
0   111  1003   995  20   0   2748  1272 SyS_ep S    ?          0:00 /bin/dbus-daemon --config-file=/etc/at-spi2/accessibility.conf --nofork --print-address 3
0   111  1010     1  20   0  15212  2484 poll_s Sl   ?          0:00 /usr/lib/at-spi2-core/at-spi2-registryd --use-gnome-session
5    33  1020   971  20   0 230948  2896 pipe_w Sl   ?          0:00 /usr/sbin/apache2 -k start
5    33  1021   971  20   0 230756  2588 pipe_w Sl   ?          0:00 /usr/sbin/apache2 -k start
4     0  1166     1  20   0   3368   712 n_tty_ Ss+  tty1       0:00 /sbin/getty -8 38400 tty1
4     0  1167     1  20   0   1616   640 n_tty_ Ss+  ttyO2      0:00 /sbin/getty 115200 ttyO2
4     0  1198   914  20   0   9136  2908 poll_s Ss   ?          0:00 sshd: ubuntu [priv] 
5  1000  1210  1198  20   0   9268  1596 poll_s S    ?          0:00 sshd: ubuntu@pts/2  
0  1000  1211  1210  20   0   5344  2780 wait   Ss   pts/2      0:00 -bash
4     0  1235  1211  20   0   4968  1368 wait   S    pts/2      0:00 su
4     0  1236  1235  20   0   4220  1652 wait   S    pts/2      0:00 bash

没有 sendmail 也没有其他 MTA,对吧?我的最后一个想法:cron 可能会尝试发送邮件。我通过设置关闭了 cron 的邮件功能MAILTO="",我的crontab看起来像这样

# /etc/crontab: system-wide crontab
# Unlike any other crontab you don't have to run the `crontab'
# command to install the new version when you edit this file
# and files in /etc/cron.d. These files also have username fields,
# that none of the other crontabs do.

SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=""

# m h dom mon dow user  command
17 *    * * *   root    cd / && run-parts --report /etc/cron.hourly
25 6    * * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily )
47 6    * * 7   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.weekly )
52 6    1 * *   root    test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.monthly )
#
5   */2 *   *   *   root        /root/ddclient-3.7.3.bash
15  */2 *   *   *   ubuntu      /home/ubuntu/public_html/testprovider/testHosts.bash
0   */4 *   *   *   ubuntu      /home/ubuntu/public_html/testprovider/evalHosts.bash
*/10    *   *   *   *   connectX    /home/connectX/public_html/startServers.bash

继续愚蠢的窗户礼仪,重新启动但仍然 -sm-msp-queue洪水syslogmail.log。我该怎么做才能摆脱这些信息?

收到第一个答案后(非常感谢!)我检查了以下建议:

MTA没有启动?

显然不是,正如我所希望的那样:

telnet localhost 25
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused

问题仍然存在:谁试图向邮件队列提供信息并产生这些错误消息?

发送了太多电子邮件?

如果是的话:现在会是谁呢?有人频繁地(每 20 分钟)尝试发送邮件:

Jan 11 12:20:04 BeagleBoard-xM sendmail[2136]: My unqualified host name (BeagleBoard-xM) unknown; sleeping for retry
Jan 11 12:21:04 BeagleBoard-xM sendmail[2136]: unable to qualify my own domain name (BeagleBoard-xM) -- using short name
Jan 11 12:21:04 BeagleBoard-xM sendmail[2136]: s0BBL4jU002136: from=smmsp, size=417, class=0, nrcpts=1, msgid=<201401111121.s0BBL4jU002136@BeagleBoard-xM>, relay=smmsp@localhost
Jan 11 12:21:04 BeagleBoard-xM sendmail[2136]: s0BBL4jU002136: to=root, ctladdr=smmsp (113/122), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30417, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]
Jan 11 12:40:04 BeagleBoard-xM sendmail[2225]: My unqualified host name (BeagleBoard-xM) unknown; sleeping for retry
Jan 11 12:41:04 BeagleBoard-xM sendmail[2225]: unable to qualify my own domain name (BeagleBoard-xM) -- using short name
Jan 11 12:41:04 BeagleBoard-xM sendmail[2225]: s0BBf4aZ002225: from=smmsp, size=417, class=0, nrcpts=1, msgid=<201401111141.s0BBf4aZ002225@BeagleBoard-xM>, relay=smmsp@localhost
Jan 11 12:41:04 BeagleBoard-xM sendmail[2225]: s0BBf4aZ002225: to=root, ctladdr=smmsp (113/122), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30417, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]
Jan 11 13:00:03 BeagleBoard-xM sendmail[2740]: My unqualified host name (BeagleBoard-xM) unknown; sleeping for retry
Jan 11 13:01:03 BeagleBoard-xM sendmail[2740]: unable to qualify my own domain name (BeagleBoard-xM) -- using short name
Jan 11 13:01:03 BeagleBoard-xM sendmail[2740]: s0BC13pA002740: from=smmsp, size=417, class=0, nrcpts=1, msgid=<201401111201.s0BC13pA002740@BeagleBoard-xM>, relay=smmsp@localhost
Jan 11 13:01:03 BeagleBoard-xM sendmail[2740]: s0BC13pA002740: to=root, ctladdr=smmsp (113/122), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30417, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]
Jan 11 13:20:04 BeagleBoard-xM sendmail[2832]: My unqualified host name (BeagleBoard-xM) unknown; sleeping for retry
Jan 11 13:21:04 BeagleBoard-xM sendmail[2832]: unable to qualify my own domain name (BeagleBoard-xM) -- using short name
Jan 11 13:21:04 BeagleBoard-xM sendmail[2832]: s0BCL4V0002832: from=smmsp, size=417, class=0, nrcpts=1, msgid=<201401111221.s0BCL4V0002832@BeagleBoard-xM>, relay=smmsp@localhost
Jan 11 13:21:04 BeagleBoard-xM sendmail[2832]: s0BCL4V0002832: to=root, ctladdr=smmsp (113/122), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30417, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1]

在我看来,唯一的候选人仍然是 cron,应该不是这样做是为了crontab提供一个空地址,以防止 cron 发送邮件。

邮件服务器被用来发送垃圾邮件?

好吧——这将是最糟糕的情况,我试图通过不是操作任何 MTA。不幸的是,我无法保证系统不会被滥用,但这种情况不太可能发生,因为我刚刚设置了 BeagleBoard 并在路由器上使用专用端口转发。路由器确实不是转发除 SSH / HTTP / HTTPS 之外的其他端口以及十个专用端口(4753 - 4762)用于我的Java 应用程序

答案1

cron 驯服了,完成了

我仔细查看了一下,发现了两个我搞乱的配置

  1. /etc/cron.d/sendmail
  2. /etc/mail/sendmail.conf

第一个负责频繁尝试,因此每 20 分钟发送一次邮件或每 10 分钟处理一次邮件队列。我刚刚将两行调用改为sendmail注释。

#------------------------------------------------------------------------------
# Every so often, give sendmail a chance to run the MSP queues.
#
# */20 *    *    *    *          smmsp   test -x /etc/init.d/sendmail && /usr/share/sendmail/sendmail cron-msp
#
#------------------------------------------------------------------------------
# Every so often, give sendmail a chance to run the MTA queues.
# Will also run MSP queues if enabled
#
# */10 *    *    *    *          root    test -x /etc/init.d/sendmail && /usr/share/sendmail/sendmail cron-mta
#
#------------------------------------------------------------------------------

第二个似乎是第一个所衍生的某个模板。我在那里更改了一些行,希望它能阻止任何后续(自动)重新配置启动任何 MTA。这些后来的更改有一天可能会变成一场灾难。

我做了一些清理工作,

rm /var/spool/mqueue/*
rm /var/spool/mqueue-client/*

重新启动了 cron( service cron restart) 并希望syslog将来能够保持清洁...

答案2

你为什么不尝试apt-get autoremove

我会向你展示我的情况

  1. 我已经安装了 ssmtp
  2. 我已经卸载了 ssmtp
  3. 我已经安装了 sendmail-bin
  4. 我已经卸载了 sendmail-bin
  5. 我已经安装了 ssmtp

我也遇到过和你一样的问题。每 20 分钟 Cron 就会向我发送一封没有任何意义的 cronjob 输出邮件,这是一种错误。当时 /etc/cron.d/ 目录中有一个“sendmail”文件。我尝试通过执行 删除 sendmail-bin 以确保它已被删除apt-get remove sendmail-bin。在输出结果中,有一条信息表明某些包不再需要。然后我执行了apt-get autoremove。之后 /etc/cron.d/sendmail 消失了,cron 邮件发送也停止了。谢谢。

答案3

可能存在以下原因:

  • 您的 MTA 尚未启动。
  • 您同时发送了太多电子邮件,您的 MTA 无法处理。
  • 您的邮件服务器正被用来发送垃圾邮件(表面上是这样的,但实际上可能不止这些)。停止服务器,找出他们发送电子邮件的方式,从队列中删除这些邮件,保护您的服务器,然后重新启动。

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