Mail Server setup Ubuntu 22.04 + iRedMail

1. In root account, first edit hostname:

nano /etc/hosts

2. Edit the hostname to DNS name, find the one starts with IP or 127.0.0.1 (hostname)

#127.0.0.1 mail-svr
127.0.0.1 mail.benfy95.net mail

3. Change hostname

echo "mail" > /etc/hostname
hostname -F /etc/hostname

4. Check output:

hostname
hostname -f

5. Download iRedMail via git

git clone https://github.com/iredmail/iRedMail.git

6. Launch the installer, install additional components if asked

cd iRedMail
bash iRedMail.sh

7. Follow on-screen instructions

a. Mail storage path

b. Desired web-server

c. Preferred DB backend, use MariaDB

d. Set DB password

e. Set domain name xxx@domain.com

f. Install optional tools, default is good enough

g. Review settings and type “y” to start installation.

8. Use firewall rules by iRedMail, then restart the server.

9. Edit SSL certificate location and reload service.

nano /etc/nginx/templates/ssl.tmpl

service nginx reload

10. Edit postfix SSL location and reload service.

nano /etc/postfix/main.cf

service postfix reload

11. Edit dovecot SSL location and reload service.

nano /etc/dovecot/dovecot.conf

service dovecot reload

12. Check DKIM keys

amavisd-new testkeys

Delete the ” symbol and put it into DNS settings.

13. SPF settings

v=spf1 ip4:(ipaddr) -all

14. DMARC settings

v=DMARC1; p=quarantine; pct=100; rua=mailto:postmaster@benfy95.net

15. PTR record settings

16. Check if DKIM, SPF, DKIM is configured correctly

DKIM selector, enter: dkim, if all tests passed, it will display as shown:

a. DKIM:

b. SPF

c. DMARC

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