Configuration of POP3 and IMAP ,Digital Certification

Configuration of POP3 and IMAP ,Digital Certification

Configuration of POP3 and IMAP 

IMAP is used for the authentication and POP3 is used for mailing

We need to configure

#vi /etc/dovecot.conf

Uncomment line No. 14

Protocols = imap imaps pop3 pop3s

Save and exit

Start the service

#service dovecot restart

#chkconfig dovecot on

#chkconfig xinetd on

Now in order to provide security

Allowing local network to access the pop3 and imap and disallowing other

#vi /etc/hosts.allow

Ipop3d                        :           172.24.0.0/255.255.0.0

Imapd             :           172.24.0.0/255.255.0.0

#vi /etc/hosts.deny

Ipop3d                        :           ALL

Imapd             :           ALL

These permission are set when host from local network can access pop3 and imap and hosts from other network does’nt allow

In order to disallow outside network say 172.25.0.0

Ipop3d                        :           172.25.0.0/255.255.0.0

Imapd             :           172.25.0.0/255.255.0.0

To check the status

#nmap stationx

Or

#namp localhost

 Digital Certification

Certificate is used for the purpose of authentication

Steps

1. Check for devecot.pem file in

#cd /usr/share/ssl/certs

#rm dovecot.pem

#make dovecot.pem

In this we have to make the following entries

1. country
2. state
3. street
4. company and unit name
5. station name
6. email address

after making all those entry we need to copy this file

#cp dovecot.pem /usr/share/ssl/private/dovecot.pem

Overwrite : yes

To check the status or entry

#openssl x509 –noout-subject </usr/share/ssl/private/dovecot.pem

Thanks,