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2 common causes for Email Error 551, and How to fix it in MailEnable, Plesk, Outlook, Thunderbird and Eudora

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...

What causes SpamAssassin error “Use of uninitialized value in concatenation (.) or string” in cPanel/WHM servers

by Visakh S | Aug 17, 2016 | cPanel, Server Administration, Technical Support

As an outsourced technical support provider for Shared Web Hosting Companies, we often encounter application errors and system faults. In the past couple of months, an error that’s often reported by cPanel/WHM users is: Aug 17 00:25:24.450 [382682] warn: Use of...

10 commandments for shared hosting success

by Visakh S | Oct 13, 2012 | Server Administration, Server Management

Isn’t shared hosting dead already? In hosting conferences and forums this is a question we’ve heard all too often. But despite all the dire predictions in the past one decade, shared hosting is still alive and flourishing. Every web host on earth has a...
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