之前在Linode的VPS中安装了邮件服务器的服务：
postfix和dovecot
后来不用了，换成了163的免费企业有了：
现在不用自己的邮件服务器了，要去禁止掉对应的服务。
【记录】
记不太清命令了。
去找到：
然后搞定了：
crifan@crifan:~$ service postfix status
Redirecting to /bin/systemctl status postfix.service
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2016-05-09 22:54:40 CST; 1 weeks 3 days ago
Process: 3552 ExecStart=/usr/sbin/postfix start (code=exited, status=0/SUCCESS)
Process: 3545 ExecStartPre=/usr/libexec/postfix/chroot-update (code=exited, status=0/SUCCESS)
Process: 3509 ExecStartPre=/usr/libexec/postfix/aliasesdb (code=exited, status=0/SUCCESS)
Main PID: 4000 (master)
CGroup: /system.slice/postfix.service
├─ 4000 /usr/libexec/postfix/master -w
├─ 4002 qmgr -l -t unix -u
├─ 4947 tlsmgr -l -t unix -u
└─10534 pickup -l -t unix -u
crifan@crifan:~$ systemctl postfix disable
Unknown operation 'postfix'.
crifan@crifan:~$ systemctl disable postfix
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-unit-files ===
Authentication is required to manage system service or unit files.
Authenticating as: root
Password:
==== AUTHENTICATION COMPLETE ===
Removed symlink /etc/systemd/system/multi-user.target.wants/postfix.service.
==== AUTHENTICATING FOR org.freedesktop.systemd1.reload-daemon ===
Authentication is required to reload the systemd state.
Authenticating as: root
Password:
==== AUTHENTICATION COMPLETE ===
crifan@crifan:~$ sudo systemctl disable postfix
[sudo] password for crifan:
crifan@crifan:~$ sudo systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; disabled; vendor preset: disabled)
Active: active (running) since Mon 2016-05-09 22:54:40 CST; 1 weeks 3 days ago
Main PID: 4000 (master)
CGroup: /system.slice/postfix.service
├─ 4000 /usr/libexec/postfix/master -w
├─ 4002 qmgr -l -t unix -u
├─ 4947 tlsmgr -l -t unix -u
└─10534 pickup -l -t unix -u
May 20 12:53:13 crifan.org postfix/pipe[4309]: 374923D80: to=<admin@crifan.org>, relay=dovecot, delay=1.3, delays=1.3/0.02/0/...rvice)
May 20 12:53:13 crifan.org postfix/qmgr[4002]: 374923D80: removed
May 20 12:53:13 crifan.org postfix/smtpd[4297]: disconnect from unknown[58.39.241.228]
May 20 13:00:19 crifan.org postfix/smtpd[5604]: warning: hostname no-reverse-dns-configured.com does not resolve to address 8...62.175
May 20 13:00:19 crifan.org postfix/smtpd[5604]: connect from unknown[89.248.162.175]
May 20 13:00:19 crifan.org postfix/smtpd[5604]: warning: unknown[89.248.162.175]: SASL LOGIN authentication failed: Invalid a...hanism
May 20 13:00:19 crifan.org postfix/smtpd[5604]: disconnect from unknown[89.248.162.175]
May 20 13:03:39 crifan.org postfix/anvil[5606]: statistics: max connection rate 1/60s for (smtp:89.248.162.175) at May 20 13:00:19
May 20 13:42:05 crifan.org postfix/smtpd[11181]: connect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
May 20 13:42:06 crifan.org postfix/smtpd[11181]: disconnect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
Hint: Some lines were ellipsized, use -l to show in full.
crifan@crifan:~$ sudo systemctl help
This command expects one or more unit names. Did you mean --help?
crifan@crifan:~$ systemctl --help
systemctl [OPTIONS...] {COMMAND} ...
Query or send control commands to the systemd manager.
-h --help Show this help
--version Show package version
--system Connect to system manager
-H --host=[USER@]HOST
Operate on remote host
-M --machine=CONTAINER
Operate on local container
-t --type=TYPE List units of a particular type
--state=STATE List units with particular LOAD or SUB or ACTIVE state
-p --property=NAME Show only properties by this name
-a --all Show all loaded units/properties, including dead/empty
ones. To list all units installed on the system, use
the 'list-unit-files' command instead.
-l --full Don't ellipsize unit names on output
-r --recursive Show unit list of host and local containers
--reverse Show reverse dependencies with 'list-dependencies'
--job-mode=MODE Specify how to deal with already queued jobs, when
queueing a new job
--show-types When showing sockets, explicitly show their type
-i --ignore-inhibitors
When shutting down or sleeping, ignore inhibitors
--kill-who=WHO Who to send signal to
-s --signal=SIGNAL Which signal to send
--now Start or stop unit in addition to enabling or disabling it
-q --quiet Suppress output
--no-block Do not wait until operation finished
--no-wall Don't send wall message before halt/power-off/reboot
--no-reload Don't reload daemon after en-/dis-abling unit files
--no-legend Do not print a legend (column headers and hints)
--no-pager Do not pipe output into a pager
--no-ask-password
Do not ask for system passwords
--global Enable/disable unit files globally
--runtime Enable unit files only temporarily until next reboot
-f --force When enabling unit files, override existing symlinks
When shutting down, execute action immediately
--preset-mode= Apply only enable, only disable, or all presets
--root=PATH Enable unit files in the specified root directory
-n --lines=INTEGER Number of journal entries to show
-o --output=STRING Change journal output mode (short, short-iso,
short-precise, short-monotonic, verbose,
export, json, json-pretty, json-sse, cat)
--plain Print unit dependencies as a list instead of a tree
Unit Commands:
list-units [PATTERN...] List loaded units
list-sockets [PATTERN...] List loaded sockets ordered by address
list-timers [PATTERN...] List loaded timers ordered by next elapse
start NAME... Start (activate) one or more units
stop NAME... Stop (deactivate) one or more units
reload NAME... Reload one or more units
restart NAME... Start or restart one or more units
try-restart NAME... Restart one or more units if active
reload-or-restart NAME... Reload one or more units if possible,
otherwise start or restart
reload-or-try-restart NAME... Reload one or more units if possible,
otherwise restart if active
isolate NAME Start one unit and stop all others
kill NAME... Send signal to processes of a unit
is-active PATTERN... Check whether units are active
is-failed PATTERN... Check whether units are failed
status [PATTERN...|PID...] Show runtime status of one or more units
show [PATTERN...|JOB...] Show properties of one or more
units/jobs or the manager
cat PATTERN... Show files and drop-ins of one or more units
set-property NAME ASSIGNMENT... Sets one or more properties of a unit
help PATTERN...|PID... Show manual for one or more units
reset-failed [PATTERN...] Reset failed state for all, one, or more
units
list-dependencies [NAME] Recursively show units which are required
or wanted by this unit or by which this
unit is required or wanted
Unit File Commands:
list-unit-files [PATTERN...] List installed unit files
enable NAME... Enable one or more unit files
disable NAME... Disable one or more unit files
reenable NAME... Reenable one or more unit files
preset NAME... Enable/disable one or more unit files
based on preset configuration
preset-all Enable/disable all unit files based on
preset configuration
is-enabled NAME... Check whether unit files are enabled
mask NAME... Mask one or more units
unmask NAME... Unmask one or more units
link PATH... Link one or more units files into
the search path
add-wants TARGET NAME... Add 'Wants' dependency for the target
on specified one or more units
add-requires TARGET NAME... Add 'Requires' dependency for the target
on specified one or more units
edit NAME... Edit one or more unit files
get-default Get the name of the default target
set-default NAME Set the default target
Machine Commands:
list-machines [PATTERN...] List local containers and host
Job Commands:
list-jobs [PATTERN...] List jobs
cancel [JOB...] Cancel all, one, or more jobs
Snapshot Commands:
snapshot [NAME] Create a snapshot
delete NAME... Remove one or more snapshots
Environment Commands:
show-environment Dump environment
set-environment NAME=VALUE... Set one or more environment variables
unset-environment NAME... Unset one or more environment variables
import-environment [NAME...] Import all or some environment variables
Manager Lifecycle Commands:
daemon-reload Reload systemd manager configuration
daemon-reexec Reexecute systemd manager
System Commands:
is-system-running Check whether system is fully running
default Enter system default mode
rescue Enter system rescue mode
emergency Enter system emergency mode
halt Shut down and halt the system
poweroff Shut down and power-off the system
reboot [ARG] Shut down and reboot the system
kexec Shut down and reboot the system with kexec
exit Request user instance exit
switch-root ROOT [INIT] Change to a different root file system
suspend Suspend the system
hibernate Hibernate the system
hybrid-sleep Hibernate and suspend the system
crifan@crifan:~$ sudo systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; disabled; vendor preset: disabled)
Active: active (running) since Mon 2016-05-09 22:54:40 CST; 1 weeks 3 days ago
Main PID: 4000 (master)
CGroup: /system.slice/postfix.service
├─ 4000 /usr/libexec/postfix/master -w
├─ 4002 qmgr -l -t unix -u
├─ 4947 tlsmgr -l -t unix -u
└─10534 pickup -l -t unix -u
May 20 12:53:13 crifan.org postfix/pipe[4309]: 374923D80: to=<admin@crifan.org>, relay=dovecot, delay=1.3, delays=1.3/0.02/0/...rvice)
May 20 12:53:13 crifan.org postfix/qmgr[4002]: 374923D80: removed
May 20 12:53:13 crifan.org postfix/smtpd[4297]: disconnect from unknown[58.39.241.228]
May 20 13:00:19 crifan.org postfix/smtpd[5604]: warning: hostname no-reverse-dns-configured.com does not resolve to address 8...62.175
May 20 13:00:19 crifan.org postfix/smtpd[5604]: connect from unknown[89.248.162.175]
May 20 13:00:19 crifan.org postfix/smtpd[5604]: warning: unknown[89.248.162.175]: SASL LOGIN authentication failed: Invalid a...hanism
May 20 13:00:19 crifan.org postfix/smtpd[5604]: disconnect from unknown[89.248.162.175]
May 20 13:03:39 crifan.org postfix/anvil[5606]: statistics: max connection rate 1/60s for (smtp:89.248.162.175) at May 20 13:00:19
May 20 13:42:05 crifan.org postfix/smtpd[11181]: connect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
May 20 13:42:06 crifan.org postfix/smtpd[11181]: disconnect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
Hint: Some lines were ellipsized, use -l to show in full.
crifan@crifan:~$ sudo systemctl stop postfix
crifan@crifan:~$ sudo systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/postfix.service; disabled; vendor preset: disabled)
Active: inactive (dead)
May 20 13:00:19 crifan.org postfix/smtpd[5604]: warning: unknown[89.248.162.175]: SASL LOGIN authentication failed: Invalid a...hanism
May 20 13:00:19 crifan.org postfix/smtpd[5604]: disconnect from unknown[89.248.162.175]
May 20 13:03:39 crifan.org postfix/anvil[5606]: statistics: max connection rate 1/60s for (smtp:89.248.162.175) at May 20 13:00:19
May 20 13:42:05 crifan.org postfix/smtpd[11181]: connect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
May 20 13:42:06 crifan.org postfix/smtpd[11181]: disconnect from 220-244-5-154.static.tpgi.com.au[220.244.5.154]
May 20 14:02:27 crifan.org systemd[1]: Stopping Postfix Mail Transport Agent...
May 20 14:02:27 crifan.org postfix[14578]: /usr/sbin/postconf: warning: /etc/postfix/main.cf: undefined parameter: virtual_m...it_maps
May 20 14:02:27 crifan.org postfix[14578]: /usr/sbin/postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_crea...ize=yes
May 20 14:02:27 crifan.org postfix[14578]: /usr/sbin/postconf: warning: /etc/postfix/main.cf: unused parameter: virtual_mail...ded=yes
May 20 14:02:27 crifan.org systemd[1]: Stopped Postfix Mail Transport Agent.
Hint: Some lines were ellipsized, use -l to show in full.
crifan@crifan:~$ sudo systemctl status dovecot
● dovecot.service - Dovecot IMAP/POP3 email server
Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; vendor preset: disabled)
Active: active (running) since Mon 2016-05-09 22:55:10 CST; 1 weeks 3 days ago
Main PID: 4142 (dovecot)
CGroup: /system.slice/dovecot.service
├─ 4142 /usr/sbin/dovecot -F
├─ 4147 dovecot/anvil
├─ 4148 dovecot/log
└─11185 dovecot/config
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=1...CmPimE>
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=1...CmPimE>
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=1...CmPimE>
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=166.62.41.132,...CmPimE>
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=1...CmPimE>
May 19 14:53:45 crifan.org dovecot[4148]: imap-login: Disconnected (disconnected before auth was ready, waited 0 secs): user...CN1HqB>
May 19 23:50:16 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=141.212.122.81...CN1HpR>
May 20 02:20:19 crifan.org dovecot[4148]: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=54.186.221.62,...A2ut0+>
May 20 06:39:19 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=54.67.0.110, l...A2QwBu>
May 20 13:21:06 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=89.248.172.154...BZ+Kya>
Hint: Some lines were ellipsized, use -l to show in full.
crifan@crifan:~$ sudo systemctl stop dovecot
crifan@crifan:~$ sudo systemctl status dovecot
● dovecot.service - Dovecot IMAP/POP3 email server
Loaded: loaded (/usr/lib/systemd/system/dovecot.service; enabled; vendor preset: disabled)
Active: inactive (dead) since Fri 2016-05-20 14:02:49 CST; 2s ago
Main PID: 4142 (code=exited, status=0/SUCCESS)
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=166.62.41.132,...CmPimE>
May 18 16:13:44 crifan.org dovecot[4148]: pop3-login: Aborted login (tried to use disallowed plaintext auth): user=<>, rip=1...CmPimE>
May 19 14:53:45 crifan.org dovecot[4148]: imap-login: Disconnected (disconnected before auth was ready, waited 0 secs): user...CN1HqB>
May 19 23:50:16 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=141.212.122.81...CN1HpR>
May 20 02:20:19 crifan.org dovecot[4148]: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=54.186.221.62,...A2ut0+>
May 20 06:39:19 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=54.67.0.110, l...A2QwBu>
May 20 13:21:06 crifan.org dovecot[4148]: pop3-login: Disconnected (no auth attempts in 1 secs): user=<>, rip=89.248.172.154...BZ+Kya>
May 20 14:02:49 crifan.org dovecot[4142]: master: Warning: Killed with signal 15 (by pid=1 uid=0 code=kill)
May 20 14:02:49 crifan.org systemd[1]: Stopping Dovecot IMAP/POP3 email server...
May 20 14:02:49 crifan.org systemd[1]: Stopped Dovecot IMAP/POP3 email server.
Hint: Some lines were ellipsized, use -l to show in full.
crifan@crifan:~$ sudo systemctl disable dovecot
Removed symlink /etc/systemd/system/multi-user.target.wants/dovecot.service.
crifan@crifan:~$ sudo systemctl disable postfix
crifan@crifan:~$ sudo systemctl is-enabled postfix
disabled
crifan@crifan:~$ sudo systemctl is-enabled dovecot
disabled 另外，另外也去试了试其它命令：
systemctl list-units
systemctl status
然后再去重启服务器：
之后再去确认服务是否被真的关闭不允许了：
crifan@crifan:~$ sudo systemctl is-enabled dovecot [sudo] password for crifan: disabled crifan@crifan:~$ sudo systemctl is-enabled postfix disabled crifan@crifan:~$ systemctl status dovecot ● dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/usr/lib/systemd/system/dovecot.service; disabled; vendor preset: disabled) Active: inactive (dead) crifan@crifan:~$ systemctl status postfix ● postfix.service - Postfix Mail Transport Agent Loaded: loaded (/usr/lib/systemd/system/postfix.service; disabled; vendor preset: disabled) Active: inactive (dead)
【总结】
CentOS中禁止掉邮件服务：dovecot和postfix：
sudo systemctl stop dovecot sudo systemctl stop postfix sudo systemctl disable dovecot sudo systemctl disable postfix
在操作之前和之后，可以查看状态：
systemctl status dovecot systemctl status postfix
和：
systemctl is-enabled dovecot systemctl is-enabled postfix
以及重启系统后，再去确认：
systemctl status dovecot systemctl status postfix
和：
systemctl is-enabled dovecot systemctl is-enabled postfix
转载请注明：在路上 » 【记录】CentOS中禁止掉邮件服务dovecot和postfix