Mysql, Courier-Imap and POP - make them listen to localhost

-MYSQL-

Edit the the file /etc/my.cnf and add "bind-address = 127.0.0.1" with out the quote, and will look like that below....

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).
old_passwords=1

bind-address = 127.0.0.1

[mysql.server]
user=mysql
basedir=/var/lib

[mysqld_safe]
err-log=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

---------------------------


Courier-IMAP and POP3 with SSL

Edit the file that can be located @ /usr/lib/courier-imap/etc. Those files are, for IMAP, imapd and imapd-ssl, for POP3, pop3d and pop3d-ssl. Make sure to change the entry that contains

##NAME: ADDRESS:0
#
# Address to listen on, can be set to a single IP address.
#
ADDRESS=127.0.0.1

#ADDRESS=0

the default is ADDRESS=0, I just change 0 (zero) to 127.0.0.1 so that it is not accessible outside, do this only if you dont need your IMAP or POP3 server to be accessible from outside, so its applicable if you use a web based email client like that of squirrel mail, you can set it up this way for safety purposes...