Mail Server : Add Mail User Accounts (Virtual User)2024/04/17 |
Add Mail User Accounts to use Mail Service.
This example is for the case you use virtual mail-user accounts, not use OS accounts.
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[1] |
Configure basic Postfix settings and
basic Dovecot settings first.
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[2] | Configure additional settings to Postfix and Dovecot. |
# create admin user for virtual mailboxes root@mail:~ # pw useradd vmail -u 20000 -d /home/vmail -s /usr/sbin/nologin -m
root@mail:~ #
vi /usr/local/etc/postfix/main.cf # line 184 : comment out # mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
# line 442 : change home_mailbox = /home/vmail/%d/%n/Maildir
# add to last line
# if specify multiple domains, specify comma or space separated
virtual_mailbox_domains = srv.world, virtual.host
virtual_mailbox_base = /home/vmail
virtual_mailbox_maps = hash:/usr/local/etc/postfix/virtual-mailbox
virtual_uid_maps = static:20000
virtual_gid_maps = static:20000
root@mail:~ #
vi /usr/local/etc/dovecot/conf.d/10-auth.conf # line 100 : add auth_mechanisms = cram-md5 plain login
# line 122 : comment out # !include auth-system.conf.ext
# line 125 : uncomment !include auth-passwdfile.conf.ext # line 127 : uncomment !include auth-static.conf.ext cp -p /usr/local/etc/dovecot/example-config/conf.d/auth-passwdfile.conf.ext /usr/local/etc/dovecot/conf.d/ root@mail:~ # cp -p /usr/local/etc/dovecot/example-config/conf.d/auth-static.conf.ext /usr/local/etc/dovecot/conf.d/
root@mail:~ #
vi /usr/local/etc/dovecot/conf.d/auth-passwdfile.conf.ext # line 8 : change
passdb {
driver = passwd-file
args = scheme=CRAM-MD5 username_format=%u /usr/local/etc/dovecot/users
# line 11 : comment out all [userdb] section #userdb { # driver = passwd-file # args = username_format=%u /usr/local/etc/dovecot/users #..... #..... #}
root@mail:~ #
vi /usr/local/etc/dovecot/conf.d/auth-static.conf.ext # line 21-24 : uncomment and change
userdb {
driver = static
args = uid=vmail gid=vmail home=/home/vmail/%d/%n
}
root@mail:~ #
vi /usr/local/etc/dovecot/conf.d/10-mail.conf # line 30 : change mail_location = maildir:/home/vmail/%d/%n/Maildir
service postfix reload root@mail:~ # service dovecot reload |
[3] | Add virtual mail user accounts. |
root@mail:~ #
vi /usr/local/etc/postfix/virtual-mailbox # create new # [user account] [mailbox] freebsd@srv.world srv.world/freebsd/Maildir/ openbsd@srv.world srv.world/openbsd/Maildir/ netbsd@virtual.host virtual.host/netbsd/Maildir/
root@mail:~ #
postmap /usr/local/etc/postfix/virtual-mailbox
# generate encrypted password root@mail:~ # doveadm pw -s CRAM-MD5 Enter new password: Retype new password: {CRAM-MD5}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
root@mail:~ #
vi /usr/local/etc/dovecot/users # create new # [user account] [password] freebsd@srv.world:{CRAM-MD5}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx openbsd@srv.world:{CRAM-MD5}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx netbsd@virtual.host:{CRAM-MD5}xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx |
[4] | That's OK. Verify to test to send emails with E-Mail client. For settings on this example, specify email address for [Username] on Email Client settings. |
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