Mail Server Configuration - Fedora (CentOS)

• Webmin DNS

1. install Fedora with GUI
2. set static id address with DNS: 8.8.8.8
3. set hostname
1. root# cp /etc/hostname /etc/hostname.bak
2. root# vi /etc/hostname
3. fedora8
4. set hosts
1. root# cp /etc/hosts /etc/hosts.bak
2. root# vi /etc/hosts
3. 10.64.201.8         fedora8.fed8.com           fedora8
5. install bind
1. root# dnf install -y bind
2. root# systemctl enable named
3. root# systemctl start named
6. after install dns server, we modify setting of DNS.
1. vi /etc/named.conf
2. listen-on port 53 { 10.64.201.x; }
3. dnssec-validation no;
4. add recursion yes;
7. install sendmail
1. root# dnf install -y sendmail sendmail-cf
2. root# systemctl enable sendmail
3. root# systemctl start sendmail
8. go to webmin.com to install webmin
9. open webmin by https://fedora8:10000
10. create master zone

12. create A records

13. create alias records for FTP

14. create MX record with fed11.com. priority 5

15. change dns from8.8.8.8 to itself 10.64.201.8
16. transfer dns zone to class dns server

17. turn off firewall
1. systemctl disable firewalld
2. Systemctl stop firewalld
18. go to class dns server to create secondary zoon.

 

19. force fedora forward the dns zoon always to class dns server.

 

• Setup 2nd Domain DNS and Sendmail

20. create master zone: fed8.ca

21. create MX records

22. zoon transfer to class dns

23. go to class dns server to create sendory zoon: fed8.ca
24. go back to fedora, modify configure file of sendmail: /etc/mail/sendmail.mc

25. comment out the line: DAEMON_OPT….

26. generate a new configure file of sendmail after any change.
1. make -C /etc/mail

27. restart sendmail : systemctl restart sendmail
28. install alpine for testing.

dnf install -y alpine

29. change local configure of alpine
30. 

31. change the access file to add relay:
1. vi /etc/mail/access
2. 
32. generate a new configure file of sendmail after any change.
1. make -C /etc/mail
33. restart sendmail and test using alpine.

                You can test by nslokup -q=mx fed8.com before send mail to the mailbox

• Install Dovecot

34. Install dovecot

for fedora and centos:

dnf install -y dovecot

35. Check the configure file:
36. vi /etc/dovecot/dovecot.conf
37. vi /etc/covecot/conf.d/10-mail.conf

38. 
39. remove the # to indicate the mail location.

40. 

41. SOLUTION FOR ERROR WITH OUTLOOK CONNECTING TO POP3 (Not yet test)

1. cd /etc/dovecot/conf.d
2. vi 10-auth.conf
3. disable_plaintext_auth = no
4. save the file and restart the service in outlook turn of secure authentication SPA
5. And under the advanced tab uncheck the pop3 ssl authentication

42. change the mail folder permission to 600.

• Now we can setup the client email using outlook

43. add new pop and imap account in outlook
44. 
45.