Mail Server : Install Mailman2021/07/30

	Install [Mailman] which is the mailing list management tool.
[1]	Configure basic Postfix settings and basic Dovecot settings first.
[2]	Install Apache httpd, refer to here.
[3]	Install Mailman.

[root@mail ~]#

dnf module -y install mailman

[root@mail ~]#

vi /etc/mailman/mm_cfg.py

# line 86 : change to your hostname (with FQDN)

DEFAULT_URL_HOST =

'mail.srv.world'

DEFAULT_EMAIL_HOST =

'mail.srv.world'

[root@mail ~]#

vi /usr/lib/mailman/Mailman/Defaults.py

# line 509 : change default MTA

MTA = '

Postfix

# line 988 : change to your language

DEFAULT_SERVER_LANGUAGE = '

# line 1024 : change if you need

OWNERS_CAN_DELETE_THEIR_OWN_LISTS =

Yes

# line 1251 : change if you need

# set action when peopel who are not list member send to mailing list

# 0 = Accept

# 1 = Hold

# 2 = Reject

# 3 = Discard

DEFAULT_GENERIC_NONMEMBER_ACTION = 1

# line 1313 : change if you need

# 0 - Reply-To: not munged

# 1 - Reply-To: set back to the list

# 2 - Reply-To: set to an explicit value (reply_to_address)

DEFAULT_REPLY_GOES_TO_LIST = 0

# generate alias file

[root@mail ~]#

/usr/lib/mailman/bin/genaliases

# set Mailman admin password

[root@mail ~]#

/usr/lib/mailman/bin/mmsitepass

New site password:
Again to confirm password:
Password changed.

# check permissions

[root@mail ~]#

/usr/lib/mailman/bin/check_perms

/usr/lib/mailman/Mailman/mm_cfg.pyc bad group (has: root, expected mailman)
.....
.....

# improve permissions with option [-f]

[root@mail ~]#

/usr/lib/mailman/bin/check_perms -f

[root@mail ~]#

/usr/lib/mailman/bin/check_perms

No problems found

# improve other permissions

[root@mail ~]#

chown apache /etc/mailman/aliases

[root@mail ~]#

chmod 664 /etc/mailman/aliases*

[root@mail ~]#

chmod 2775 /etc/mailman

# create administrative list [mailman]

[root@mail ~]#

/usr/lib/mailman/bin/newlist mailman

Enter the email of the person running the list:

mailman@mail.srv.world

Initial mailman password:
Hit enter to notify mailman owner...

[root@mail ~]#

systemctl enable --now mailman

[4]	Configure Postfix.

[root@mail ~]#

vi /etc/postfix/main.cf

# line 405 : add

alias_maps = hash:/etc/aliases,

hash:/etc/mailman/aliases

# line 416 : add

alias_database = hash:/etc/aliases,

hash:/etc/mailman/aliases

[root@mail ~]#

systemctl restart postfix httpd

[5]	Access to the [(Server's hostname or IP address)/mailman/admin] from any client computer, then, Mailman admin site is displayed.

[6]	Click [create a new mailing list], then registration form is shown like follows. [Initial list password] is the password which owner of this mailing list can manage settings.

[7]	[List creatoer's password] is the one which you added in [3] section as Mailman admin password.

[8]	After successfully created, notification email is sent to mailing list owner's address.

[9]	New mailing list is shown on the list.

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