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How to fix ‘Unknown table engine ‘innodb” error
InnoDB is a storage engine for MySQL. Due to its speedy crash recovery, InnoDB is the preferred engine for high available databases. But there are times when InnoDB throws error, such as 'Unknown table engine 'innodb''. Today, we'll see when and why this error...
‘550-Unrouteable address’ – What causes it and how to fix it in Exim, cPanel and Outlook
550 email errors happens due to a multitude of reasons, ranging from a non-existing mail account to a wrongly added mail server rule. Today, we'll discuss the error '550-Unrouteable address' based on the various scenarios we've noticed them happening, during our Web...
‘550 5.1.1 User unknown’ – How to fix this email error in Exchange, Postfix and Qmail servers
'550 5.1.1 User unknown' is one of the common issues reported by users sending mails to Exchange servers. 550 error means there is some problem with the recipient server which makes it unable to deliver the mail. In our role as Website Support specialists for web...
550 Relay Not Permitted – How to fix it in Exim, cPanel, Outlook, Thunderbird and Outlook Express
'550 Relay Not Permitted' is a common error message in email programs when users attempt to send mails without proper authentication. This is a security measure to protect mail server from open relay. In our role as Support Engineers for web hosting companies, we see...
How to fix email error ‘403 4.7.0 TLS handshake failed’ in cPanel, Plesk, Exim, Qmail, Exchange and SendMail servers
Debugging and fixing email errors is a common task we perform in our Outsourced Web Hosting Support services provided to shared server owners. Among the common mail server errors, '403 4.7.0 TLS handshake failed' error happens when a sender tries to send mail to a...
How to fix error ‘Could not access KVM kernel module’ in Proxmox, Virtualizor, SolusVM, Redhat, CentOS and Ubuntu
KVM is a Linux virtualization technology that's used in many virtualization solutions such as Proxmox, Virtualizor and SolusVM. All major Linux systems like RedHat, CentOS, Debian and Ubuntu have in-built support for KVM. Bobcares helps VPS providers and server owners...
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