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Archive | October, 2013

Change mail server IP in Plesk

  Lets show you how to change the mail relaying IP address of a domain to something other than the main qmail IP address. If primary mail server ip address is  blocked in any  of the spam checker sites ( eg SORBS-SPAM, BARRACUDA etc)  then there is only one solution, that is change the mail server  Full Article…

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Openssl commands

Following openssl commands help you to manage ssl when there is no control panel (such as cpanel) for the server. Such commands may be used in plain linux server. a) How to generate a new private key and Certificate Signing Request openssl req -out CSR.csr -new -newkey rsa:2048 -nodes -keyout privateKey.key b) Generate a self-signed  Full Article…

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Kill apache semaphores

If apache in the server doesn’t start, you can try for the below shown script, it doesnt do any magic, it simply kills the apache semaphores. I’d assume if you’re reading this article, Apache has stopped running. Run this command as root: # ipcs -s If you see a list of semaphores, Apache has not  Full Article…

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Transferred my site but e-mail are not working

  When you transfer your site from one web hosting provider to another the e-mail addresses do not get transferred with it. You need to go to the cPanel Control Panel that you have with the new web hosting provider and add those e-mail addresses to your account, with the password of your choice. Please use  Full Article…

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How to enable error and exception logging in Magento?

By default, Magento does not register messages about errors and exceptions, so if something fatal happens, the sysadmins are usually in trouble as there is no log, error or debugging messages. To turn on the logging, navigate to System > Configuration > Developer > Log Settings and set the «Enabled» option to «Yes» To Enable  Full Article…

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Installing mod_evasive

mod_evasive is an apache module to protect the server against HTTP DoS or DDoS attack or brute force attack. Its a widely used module by sysadmins around the glob to mitigate ddos. It is also designed to be a detection and network management tool, and can be easily configured to work along with ipchains, firewalls,  Full Article…

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CONNLIMIT in csf firewall

csf is the most popular firewall used in the linux servers. Tweakings of the csf are common tasks by sysadmins and one of the commonly encountered tasks are limiting the number of connections to the server. We can limit the number of connections from an IP address to a port at a particular time by  Full Article…

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Install APC php module on Linux server

The APC(Alternative PHP Cache) can be installed using PECL on linux cpanel server 1) Just execute following command from shell as root user pecl install apc and select the options as per the requirement. 2) Update global php.ini with the apc extension extension=”apc.so” 3) Restart apache service Steps to install APC on Linux server manually  Full Article…

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mail client settings of a domain.

  Inorder to setup a email account in any of the email clients like Outlook, thunderbird etc, you may need a few details like incoming, outgoing server, port numbers etc. All the details can be derived from cPanel itself. ♦ Login to cPanel (http://example.com/cpanel) ♦ Navigate to the email section. cPanel>>Email>>Find the email address in  Full Article…

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