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xmlrpc.php causing high load in server – How to recover and prevent this issue in cPanel, Plesk and DirectAdmin Apache servers
In cPanel, Plesk and DirectAdmin servers that have WordPress websites, high server load is sometimes reported with "xmlrpc.php" showing up as the top CPU hog. xmlrpc.php is a file in WordPress websites used for remote publishing and ping-back tracking. Botnets target...
Security fix for libuser root privilege vulnerability
Qualys reported on 23rd July an important root privilege escalation vulnerability (CVE-2015-3246), and DoS attack vulnerability (CVE-2015-3245) for Linux servers using RedHat's libuser package. Here's how you can protect your cPanel, Plesk and DirectAdmin servers...
How to fix libuser root privilege and DoS attack vulnerability
Qualys reported on 23rd July an important root privilege escalation vulnerability (CVE-2015-3246), and DoS attack vulnerability (CVE-2015-3245) for Linux servers using RedHat's libuser package. Here's how you can protect your CentOS and RedHat server from these...
503 Valid RCPT command must precede DATA – How to resolve this Outlook error in cPanel/WHM hosted email accounts
Customers who use Outlook to access email accounts hosted on cPanel/WHM email servers sometimes report the error 503 Valid RCPT command must precede DATA when trying to send their mails. This is often reported for servers in which SMTP authentication is enabled. What...
IIS error tracing – How to use Process Monitor to diagnose IIS errors in Windows servers
In our role as Outsourced Tech Support for web hosts, trouble-shooting and maintaining IIS web servers is something our engineers do on a regular basis. We've seen that, in Windows dedicated servers and VPS, users sometimes request assistance in troubleshooting HTTP...
HTTP Error 503 The service is unavailable – How to resolve this website error in Odin Plesk Windows servers
In Odin Plesk Windows servers, customers sometimes report their sites being unavailable with the error showing : "HTTP Error 503. The service is unavailable." This usually happens after a major change like a migration, site restore, etc., and leads to all sites of the...
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