# During the installation, the SSL certificates for IMAP-SSL and POP3-SSL are created with the hostname localhost. To change this to the correct hostname (server1.example.com in this tutorial), delete the certificates...
cd /etc/courier
rm -f /etc/courier/imapd.pem
rm -f /etc/courier/pop3d.pem
# ... and modify the following two files; replace CN=localhost with CN=server1.example.com (you can also modify the other values, if necessary):
vi /etc/courier/imapd.cnf
[...]
CN=server1.example.com
[...]
vi /etc/courier/pop3d.cnf
[...]
CN=server1.example.com
[...]
# Then recreate the certificates...
mkimapdcert
mkpop3dcert
# ... and restart Courier-IMAP-SSL and Courier-POP3-SSL:
9.1+9.2) Now proceed with the ISPConfig installation.
# Now start the installation process by executing:
php -q install.php
# The installer will configure all services like postfix, sasl, courier, etc. for you. A manual setup as required for ISPConfig 2 (perfect setup guides) is not nescessary. To login to the ISPConfig controlpanel, open the following URL in your browser (replace the IP to match your settings!):
http://192.168.0.100:8080/
# the default login is:
user: admin
password: admin
# In case you get a permission denied error from apache, please restart the apache webserver process.