From time to time, you may need to put your Joomla website ite in maintenance mode.This takes your website offline and shows visitors a custom message that you create, such as "My website is down for maintenance". In this article, we'll show you how to put your Joomla site in maintenance mode and explain several of the options you can customize.
To put your Joomla 2.5 site in Maintenance Mode:
Log into your Joomla Dashboard - typically this will be http://www.yourdomain.com/administrator (where you replace 'yourdomain.com' with your own internet domain name for your website)
In the top menu, hover over Site and click Global Configuration
Click the Site tab, and modify the following offline settings:
|Site Offline||Set to Yes to take your website offline|
|Offline Message||You can choose whether to hide any offline message, display a custom message, or display the message built into your theme|
|Custom Message||If you want a custom offline message, enter it here and ensure the Offline Message is set to Use the Custom Message|
|Offline Image||If you have a logo or image to be show use the Select button andselect it.|
After configuring your offline settings, click Save in the upper right menu. Your Joomla website is now in maintenance mode.