Debian – Free up some disk space

Under Debian for most Linux distributions you can free up some disk space, simply by deleting the configuration files resulting unistallation of packages. The commands to be used are: dpkg –purge $dpkg –get-selections | grep deinstall$ | cut -f 1 dpkg –purge $dpkg –get-selections | awk ‘$2 ~ /de/ { print $1 } ‘ aptitude Read more about Debian – Free up some disk space[…]

How to Change the Port Number in Postfix

How to Change the Port Number in PostfixThe default network SMTP port for Postfix, Sendmail and most other mail servers is 25. This is the port used to send email, and most email clients will use it by default. Unfortunately, some Internet service providers have started to block port 25 because of the high volume Read more about How to Change the Port Number in Postfix[…]