Dedicated Mail Server Hosting Multiple Domains – Step 4 – Further Configurations

Firewall CentOS 7 now uses FirewallD, which is not bad, but I don’t think it’s mature enough. So to just disable it and get back to the classic iptables service there are some steps: systemctl stop firewalld systemctl disable firewalld yum -y install iptables-services systemctl enable iptables systemctl restart iptables…
Mail Server Series

Dedicated Mail Server Hosting Multiple Domains – Step 2 – Database and Web Administration Interface Setup

This mail server will use Postfix as a MTA, Dovecot as an LDA, IMAP/POP Server, and MariaDB(MySQL) to store user login information. It will also use PostfixAdmin web interface to manage domain, users and mail administrators information. HTTPD To run the web administration interface and the Webmail we need to…
Mail Server Series

follow the logs

Well, on a high-traffic mail server we need to follow the server log, to look for possible issues. The “tail -f” method might just not be as good as we would want, text is going up too fast and web just can’t read that fast. A solution to that is…
Tips & Tricks

Per site custom CSS

Let’s say you’re on a news website for instance bbc.co.uk, that you read a lot, but each time you look on the website you can’t tell if you already visited that portion of the website or not. Let’s say you still have a chance, there’s a Firefox and Chrome add-on…
Tips & Tricks

Removing old kernels

On Debian/Ubuntu we would need to search for installed kernel packages, something like this: root@server:~# dpkg --list |grep linux-image ii  linux-image-3.2.0-23-generic         3.2.0-23.36                                      Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii  linux-image-3.2.0-56-generic         3.2.0-56.86                                      Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii  linux-image-3.2.0-57-generic         3.2.0-57.87                                     …
linux