Basic mailserver configuration on RHEL10

timedatectl set-timezone Europe/Rome
dnf install mariadb
dnf install mariadb-server
systemctl enable mariadb --now

  semanage port -l | grep ssh
  semanage port -a -t ssh_port_t -p tcp 1999
  semanage port -l | grep ssh

vi /etc/ssh/sshd_config systemctl restart sshd
dovecot:

conf.d/10-mail.conf

mail_location = maildir:/var/vmail/%d/%n/Maildir

verificare e rinominare togliendo .ext conf.d/auth-sql.conf.ext

commentare userdb

decommentare e modificare

userdb {
 driver = static
 args = uid=150 gid=150 home=/var/vmail/%d/%n allow_all_users=yes
}

il percorso /etc/dovecot/dovecot-sql.conf.ext e creare il file /etc/dovecot/dovecot-sql.conf.ext

driver=mysql
default_pass_scheme = PLAIN
connect= host=127.0.0.1 port=3306 dbname=mailserver user=postfix password=quigattacicova
password_query = SELECT password, email as user  FROM users where email='%u' AND enabled=1

in conf.d/10-ssl.conf

mettere certificati (no CA)

in dovecot.conf

decommentare e togliere pop3

protocols = imap lmtp submission

In fondo:

mail_uid=vmail
mail_gid=vmail

first_valid_uid = 150
last_valid_uid = 150

service stats {
 unix_listener stats-reader {
   group = vmail
   mode = 0666
 }
  unix_listener stats-writer {
    group = vmail
    mode = 0666
  }
}