# Check certificate
sudo certbot certificates
# Force renewal
sudo certbot renew --force-renewal
sudo cp cert.pem /etc/ssl/certs/iredmail.crt
sudo cp key.pem /etc/ssl/private/iredmail.key
sudo systemctl restart nginx
Configure in iRedAdmin:
Available in iRedAdmin-Pro.
sudo ufw allow 25/tcp # SMTP
sudo ufw allow 587/tcp # Submission
sudo ufw allow 465/tcp # SMTPS
sudo ufw allow 143/tcp # IMAP
sudo ufw allow 993/tcp # IMAPS
sudo ufw allow 443/tcp # HTTPS
sudo ufw enable
sudo apt install fail2ban
sudo systemctl enable fail2ban
example.com. IN TXT "v=spf1 mx a -all"
# View DKIM key
sudo cat /var/lib/dkim/example.com.pem
_dmarc.example.com. IN TXT "v=DMARC1; p=quarantine"
sudo nano /etc/spamassassin/local.cf
# Settings
required_hits 5.0
rewrite_subject 1
sudo nano /etc/amavisd/amavisd.conf
# Spam settings
$sa_tag_level_deflt = 2.0;
$sa_kill_level_deflt = 6.9;
# Update iRedMail
cd /tmp
wget https://github.com/iredmail/iRedMail/archive/master.zip
unzip master.zip
cd iRedMail-master
sudo bash iRedMail.sh --upgrade
# Update system
sudo apt update && sudo apt upgrade -y
Any questions?
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