Flush postfix queue

Traditional “sendmail -q” command flushes mail queue. Under Postfix, just enter the following to flush the mail queue # postfix flush OR # postfix -f To view mail queue, enter: # mailq To delete all mail from the queue, enter: # postsuper -d ALL To delete all mails...
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Configure Postfix with multiple instances on centos

This tutorial will tell you that how to configure Postfix with multiple instances. Prerequisites. Centos 6.x Postfix 2.6 Step 1. Install postfix through below command. #yum install postfix Step 2. Then runs below command to enalbe postfix in multiple instances mode. #postmulti -e init The above command will...
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How to check if You were ‘rooted’

This tutorial will tell you that How to find if you have been rooted #ls -la /lib64/libkeyutils.so.1.9 #rpm -qf /lib64/libkeyutils.so.1.9 #ls -la /lib/libkeyutils.so.1.9 #rpm -qf /lib/libkeyutils.so.1.9 Those files should not exist. or: #updatedb” && locate libkeyutils.so.1.9 There should be no output: [rootl@localhost ~]# updatedb && locate libkeyutils.so.1.9 Password:...
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Install Cacti Network Monitoring on RHEL/CentOS

Install Cacti Network Monitoring on RHEL/CentOS. Cacti tool is an open source web based network monitoring and system monitoring graphing solution for IT business. Cacti enables a user to poll services at regular intervals to create graphs on resulting data using RRDtool. Generally, it is used to graph...
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