Exim locked
There may be 2 issues to check. -The presence of /etc/eximdisable, just move this file to eximdisable-bak and restart exim -The server being out of disk space and/or inodes, use ‘df -h’ and ‘df -i’ to confirm.
Change root password on CentOS
Here is how to change the roor login for centOS. Run the passwd command
Enable mod security for cPanel domains
Mod security is enabled in cpanel – but is not an icon in the individual domain cpanels. https://documentation.cpanel.net/display/ALD/ModSecurity+Domain+Manager
Fatal: bind 0.0.0.0 port 25: Address already in use with plesk server
Post fix restart produces the following Look for multiple instances of smtp inet n – n – – smtpd and comment them out: Restart postfix
IP’s Missing in WHM/cpanel Server
When you login to WHM and all the IP’s are missing. If you have avahi improperly configured and running on your machine, it will withdraw the IPs on running either a) a reboot, or b) a network restart, so you can check you logs at /var/log/messages for avahi. You can either stop avahi or properly … Read more
Control Panel for Cloud
http://developer.codero.com/community/how-to-install-ajenti-control-panel-on-centos-6/
Roundcube Database error
DATABASE ERROR: CONNECTION FAILED! Unable to connect to the database! Please contact your server-administrator. Fix: For a plesk server, remove and reinstall roundcube
After updating my SSL cert on courier, unable to connect to the mail server
http://kb.sp.parallels.com/en/122785
Mysql full table scan results in issues
http://dev.mysql.com/doc/refman/5.0/en/how-to-avoid-table-scan.html http://dev.mysql.com/doc/refman/5.0/en/explain.html http://www.percona.com/blog/2014/03/14/tools-and-tips-for-analysis-of-mysqls-slow-query-log/
Install rkhunter on CentOS 6.6
Rootkit Hunter (rkhunter) is a Unix-based tool that scans for rootkits, backdoors and possible local exploits. Rootkits are self-hiding toolkits secretly installed by a malicious intruder to allow that user to gain access to the server. Rootkit Hunter offers protection by comparing SHA-1 hashes of important files with known good ones in a online database … Read more