7 articles Linux

Incoming eMails blocked by bl.spamcop.net

550 Email blocked by bl.spamcop.net Error: Bounce back received by the sender SMTP error from remote mail server after RCPT TO:<email-address>: 550 Email blocked by bl.spamcop.net Solution: Users can disable “RBL: bl.spamcop.net” check for incoming mails from the WHM. Open the “Exim Configuration Manager” on WHM. [WHM >> Service Configuration >> Exim Configuration Manager] Click…

MySQL Database – Backup and Restoration

MySQL Database – Backup and Restoration Command to create the database backup. mysqldump -u [database_user] -p [database_name] > dumpfilename.sql Command to restore the database backup. mysql -u [database_user] -p [database_name] < database.sql (Use 'mysqldump --opt --all-databases > all_backup.sql’ to backup everything.) (Use the parameters ‘-h [IP address]’ to access a database remotely.) Click here for…

Too many authentication failures for user

SSH login problem Error: Received disconnect from x.x.x.x: 2: Too many authentication failures for user WorkAround / Fix: ssh -p 22 -o PubkeyAuthentication=no username@x.x.x.x This forces non-key authentication. I was able to logon immediately.

How to upgrade Java on a Linux Server?

Steps to upgrade Java on a Linux Server. Go to the “/usr/local/src/” directory. cd /usr/local/src/ Download the latest package[rpm] from the following page using “wget”. http://www.java.com/en/download/manual.jsp#lin Install the rpm. [root@vm src]# rpm -Uvh jre-7u7-linux-x64.rpm Preparing… ########################################### [100%] package jre-1.7.0_07-fcs.x86_64 is installed [root@vm src]# Update the “symbolic links” using the following commands. [root@vm src]# update-alternatives –install…