Formats for /etc/mailhelo and /etc/mailips
You may use any command-line text editor such as vi (or vim), nano (or pico), to edit the files....
IP canonicalization via htaccess
You generally don't want to mix Redirect (mod_alias) with RewriteRule (mod_rewrite) because they...
How to Check CentOS Version
The easiest way to check your CentOS version is via the command line.
Login to your CentOS...
Setting up a permanent 301 redirect via .htaccess
A permanent 301 redirect in your .htaccess file lets search engines and others know that a old...
How To Install Varnish 4 on CentOS 7
Varnish is a proxy and cache, or HTTP accelerator, designed to improve performance for busy,...
