ارسال ایمیل هشدار سرور با Postfix از طریق SMTP احرازشده

sudo dnf install -y postfix cyrus-sasl-plain s-nail
sudo systemctl enable --now postfix

sudo postconf -e 'inet_interfaces = loopback-only'
sudo postconf -e 'mydestination ='
sudo postconf -e 'myhostname = web01.corp.sahor.ir'
sudo postconf -e 'relayhost = [mail.sahor.ir]:587'
sudo postconf -e 'smtp_tls_security_level = encrypt'
sudo postconf -e 'smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt'
sudo postconf -e 'smtp_sasl_auth_enable = yes'
sudo postconf -e 'smtp_sasl_security_options = noanonymous'

DBT=$(postconf -h default_database_type); echo "$DBT"
echo '[mail.sahor.ir]:587 alerts@sahor.ir:Mail-Password' | sudo tee /etc/postfix/sasl_passwd >/dev/null
sudo chmod 600 /etc/postfix/sasl_passwd
sudo postmap "$DBT:/etc/postfix/sasl_passwd"
sudo postconf -e "smtp_sasl_password_maps = $DBT:/etc/postfix/sasl_passwd"

echo '/.+/ alerts@sahor.ir' | sudo tee /etc/postfix/sender_canonical >/dev/null
sudo postconf -e 'sender_canonical_maps = regexp:/etc/postfix/sender_canonical'
echo 'root: ops@sahor.ir' | sudo tee -a /etc/aliases && sudo newaliases
sudo postfix check && sudo systemctl restart postfix

echo "test from $(hostname)" | mail -s "Postfix relay test" root
sudo journalctl -u postfix -n 20 --no-pager
mailq

sudo semanage port -l | grep smtp_port_t
sudo semanage port -a -t smtp_port_t -p tcp 2525