by Visakh S | Aug 29, 2016 | Plesk
Mail errors are commonly encountered issues in our role as Website support specialists. In Plesk Windows servers, the default mail server is MailEnable. Plesk account owners sometimes report the MailEnable error ‘SMTP server response: 550 Requested action not...
by Reeshma Mathews | Aug 27, 2016 | Server Management, VPN
In our previous post, we saw how to secure your OpenSSL servers from SWEET32 Birthday Attack. But OpenSSL isn’t the only server that’s affected by this bug. Use of block cipher encryption algorithm makes OpenVPN servers also vulnerable to this attack. The...
by Reeshma Mathews | Aug 26, 2016 | Apache, Nginx, Server Management
Over 80% of websites on the internet are vulnerable to hacks and attacks. In our role as hosting support engineers for web hosts, we perform periodic security scans and updates in servers to protect them from hacks. A recent bug that affects the servers is...
by Reeshma Mathews | Aug 25, 2016 | cPanel, Technical Support
Secure transmission of data requires encrypting the data in many ways. Ciphers are the tools used for data encryption. RC4 is one such cipher. RC4 generates a stream of pseudo-random bits. These bits are combined with plain text using ‘bit-wise...
by Visakh S | Aug 24, 2016 | Server Administration, WordPress
If your website runs on WordPress v4.5.3 website, attackers can now bring down your site through a Denial of Service attack. This is possible through two vulnerabilities that were disclosed on 22nd Aug: CVE-2016-6897 – This is a Cross Site Request Forgery...
by Reeshma Mathews | Aug 24, 2016 | Server Administration, Technical Support, VMware
VMWare has issued a latest security advisory VMSA-2016-0013, which addresses two critical vulnerabilities of VMWare products – CVE-2016-5335 and CVE-2016-5336. These are severe vulnerabilities that affect VMware Identity Manager and vRealize Automation software....
by Reeshma Mathews | Aug 23, 2016 | Server Management
‘451 Temporary local problem’ is one of the most commonly reported email errors in web hosting servers. Our Support Engineers provide tech support & server management for many hosting companies, and we’ve seen several variants of this error. A...
by Reeshma Mathews | Aug 22, 2016 | Plesk, Server Management, Technical Support
Email Error 551 is an SMTP error commonly seen in MailEnable servers, and is seen in two forms: 551 Sender address is not valid for your login and 551 This mail server requires authentication before sending mail from a locally hosted domain MailEnable is widely used...
by Reeshma Mathews | Aug 20, 2016 | Amazon Web Services (AWS), Technical Support
An EC2 instance without enough free disk space, can crash instantly. That’s why having a proper AWS disk usage monitoring system is vital for EC2 instances. Amazon provides CloudWatch monitoring script for EC2 Linux-based instances. But it requires...
by Visakh S | Aug 20, 2016 | cPanel, Plesk
SMTP error from remote mail server after RCPT TO:<[email protected]>: host domain.com [xx.xx.xx.xx]: 550-Please turn on SMTP Authentication in your mail client. 550-(mail.server.net) [xxx.xxx.xxx.xxx]:36825 is not permitted to relay through 550 this server without...
