Author Archives: MP

SPF DKIM DMARC- Links

We have multiple links available to check if the mail server are correctly configured. To check reverse DNS http://viewdns.info/ http://mxtoolbox.com/ Check MX records for domain http://mxtoolbox.com/NetworkTools.aspx http://viewdns.info/reversedns/ Check if the IP/domain is blacklisted for spam http://mxtoolbox.com/NetworkTools.aspx http://viewdns.info/spamdblookup/ http://www.abuseat.org/lookup.cgi Check if … Continue reading

Posted in CPanel, DNS, Exim, Linux, Mail server, Plesk, Postfix | Tagged , , , | Leave a comment

InnoDB Corruption and Recovery

Databases get corrupted for many reasons. In my case, our  hard drive went down during writes to the database from a power failure. InnoDB corruption can cause all of the databases running on that server to become inaccessible. My server is … Continue reading

Posted in Linux, MySQL | Tagged , | Leave a comment

Set Password Policy in Mysql 5.6

——————————————————————————————- 1) INSTALL PLUGIN loads the plugin, and also registers it in the mysql. plugins table to cause the plugin to be loaded for each subsequent normal server startup. ——————————————————————————————- mysql> INSTALL PLUGIN validate_password SONAME ‘validate_password.so’; ——————————————————————————————- 2) Edit my.cnf … Continue reading

Posted in Linux, MySQL | Tagged , | Leave a comment

Postfix Hardening

Make sure the Postfix is running with non-root account: root@Philip:~#ps aux | grep postfix | grep -v ‘^root’ Change permissions and ownership on the destinations below: root@Philip:~#chmod 755 /etc/postfix root@Philip:~#chmod 644 /etc/postfix/*.cf root@Philip:~#chmod 755 /etc/postfix/postfix-script* root@Philip:~#chmod 755 /var/spool/postfix root@Philip:~#chown root:root … Continue reading

Posted in Linux, Mail server, Postfix | Tagged , | Leave a comment

Resolving subsys locked for

Today I was restarting my tomcat service and I saw Tomcat didn’t stop in a timely manner (pid[FAILED]) and subsys locked for tomcat This means the service was running at one time, but has crashed. When you start a service, … Continue reading

Posted in Linux, Tomcat | Leave a comment

Resolving “Access denied; you need (at least one of) the PROCESS privilege(s) for this operation”

I do have logged in with a mysql user easypay who has all privileges on a DB easypay and was executing the command show engine innodb status Mysql gave error as [Error Code: 1227, SQL State: 42000] Access denied; you … Continue reading

Posted in Linux, MySQL | Leave a comment

Setting up Master Slave DNS server

The DNS ( Domain Name System ) is a distributed system, used for translate domain names to IP and vice a versa Network Scenario for this Setup Master DNS Server IP: 10.10.10.20 ( ns1.example.net ) Slave DNS Server IP: 10.10.11.243 … Continue reading

Posted in DNS, Linux | Leave a comment

Fix for InnoDB: ERROR: the age of the last checkpoint is …

I recently have to restore production DB to local environment and I saw mysql log giving with bunch of errors like this InnoDB: largest such row. 150817 23:22:56  InnoDB: ERROR: the age of the last checkpoint is 9440934, InnoDB: which … Continue reading

Posted in Linux, MySQL | Leave a comment

How to (Automatically) Backup Your Website into Dropbox

As owners of websites, one of the more important things you should do is to regularly backup the website. Most web hosting providers will enable daily or weekly backups, mainly for their disaster recovery purpose only. You can do backup … Continue reading

Posted in Backup, CPanel | Tagged | Leave a comment