PROBLEM

The installation fails when connecting to the MySQL server although connecting manually using the mysql command succeeds.

ENVIRONMENT

• On-Premise Server + WebMail Installations with SELinux enabled: Version 6.0+
  Seperate MySQL server.
• Webmail Only Installations with SELinux enabled: Version 6.0+
  Seperate MySQL server.

CAUSE

HTTP modules are not allowed to connect to the network.

RESOLUTION

1. Run the following command:
   

   % /usr/sbin/setsebool -P httpd_can_network_connect true

2. Retry installation