Bobcares Logo
Search Call 1-800-383-5193 Emergency Contact
Bobcares Logo
Search Call 1-800-383-5193 Emergency Contact
Emergency Contact

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...

How to fix PHP FFmpeg error “Unable to load dynamic library ‘/usr/local/lib/php/extensions/no-debug-non-zts-20090626/ffmpeg.so'”

by Reeshma Mathews | Aug 19, 2016 | Server Management, Technical Support

Server wide errors are always a panic situation for server owners. A single server wide error can affect multiple websites in a split-second. To maintain business credibility, its therefore crucial to fix server wide errors promptly. At Bobcares, we do this for...

Easy guide to setup Amazon EC2 multiple IPs

by Reeshma Mathews | Aug 12, 2016 | Server Management

By default, an EC2 instance comes with just a single public IP. However, there are many scenarios where you need multiple public IPs for your web services to work. For instance, multi-site WordPress hosting, multiple websites with SSL, high availability fail-over...

How to mitigate Linux “Off-path” TCP exploits (CVE-2016-5696) in CentOS, RedHat, Ubuntu and Debian

by Visakh S | Aug 12, 2016 | Server Administration, Server Management

If you have a website, chances are that it’s running on a Linux server. And the latest news is that, Linux servers with kernel versions 3.6 to 4.6 are vulnerable to malware injection attacks. This was demonstrated on Aug 10th, when security researchers injected...

How to fix Fatal error: Class ‘PDO’ not found in PHP apps like Drupal, Prestashop, Joomla, etc

by Visakh S | Aug 8, 2016 | Drupal, MySQL, Server Management

Fatal error: Class ‘PDO’ not found is an error seen in websites running PHP applications such as Drupal, Prestashop, WordPress, etc. It’ll look something like this: Fatal error: Class ‘PDO’ not found in...

HTTP/2 is vulnerable to DoS attacks. Here’s how to fix them.

by Visakh S | Aug 7, 2016 | Server Management

Everyone loves fast, secure websites. Google’s SPDY and it’s successor HTTP/2 was seen as a big step towards that goal. As of Aug 6th 2016, 9.1% of websites use HTTP/2, and the trend is seeing a steep rise. All looked good. On Aug 3rd, this smooth ride...
Page 790 of 812« First«...102030...788789790791792...800810...»Last »

Recent Posts

  • What Is Proactive Monitoring? A Complete Guide
  • AI Use Cases: How Artificial Intelligence Is Used Across Industries
  • Turn Manual Business Processes into Automation-Driven Growth
  • Digitalization of Business to Speed Up Operations and Support Faster Scaling
  • Cloud Cost Optimization Best Practices: Everything You Need to Know in 2026

Categories

  • Advanced Vulnerability
  • AI Services
  • AI Support
  • AIOps
  • Amazon Web Services (AWS)
  • Apache
  • API Integration
  • Application Development
  • Azure
  • Cloud Cost Optimization
  • Cloud Management
  • Cloud-Native Application
  • Cloudflare
  • cPanel
  • cPanel migration
  • Cyberpanel
  • DDoS
  • Development Service
  • DevOps
  • DevOps Consulting
  • DevSecOps
  • Digital Transformation
  • DigitalOcean
  • DirectAdmin
  • Docker
  • Drupal
  • Ecommerce
  • Filezilla
  • FTP
  • Google cloud platform
  • HAProxy
  • Headless CMS Integration
  • Hosting Support
  • IIS
  • Infrastructure Management & Optimization
  • Kubernetes
  • KVM
  • Laravel
  • Latest
  • Linode
  • Litespeed
  • LXC/LXD
  • Magento
  • Mobile App Development
  • MongoDB
  • Moodle
  • MySQL
  • NFS
  • Nginx
  • OnApp
  • Outsourced Support
  • OVH
  • ovirt
  • pfsense
  • Plesk
  • PostgreSQL
  • PowerDNS
  • Product Engineering
  • Proxmox
  • RedHat
  • Redis
  • Sendmail
  • Server Administration
  • Server Management
  • Software Development
  • Software Testing
  • SQLServer
  • Technical Support
  • UI/UX
  • Virtualizor
  • VMware
  • VPN
  • Vulnerability Scanning
  • Vultr
  • Web Development
  • Windows
  • WordPress
  • WordPress Hosting
  • WordPressHA

Subscribe to our newsletter

Footer newsletter

Email sales@bobcares.com | Phone 1-800-383-5193

Product Engineering

  • MVP Build
  • MVP to Scale
  • Product Maintenance

Digital Transformation

  • Process Digitization & Automation
  • Systems Integration & Workflow Orchestration
  • Data Enablement & Decision Support
  • Application & Platform Modernization
  • Transformation Execution & Delivery Enablement

AI Services

  • AI Readiness & Use-Case Discovery
  • AI Integration & Application Enablement
  • Intelligent Automation & AI Workflows

Infrastructure Management

  • Always-On Infrastructure Management
  • Proactive Monitoring & Incident Prevention
  • Cloud Cost Control & Optimization (FinOps)
  • Outsourced IT & End-User Support
  • Managed Infrastructure Execution Support

DevOps & Automation Services

  • CI/CD & Release Automation
  • Infrastructure as Code & Platform Standardization
  • Reliability Engineering & Observability
  • DevSecOps Enablement
Product Engineering +
Web Development MVP to Scale Builds Microservices Architecture Agile & Dev Team Augmentation Mobile Apps Ecommerce UI/UX Design QA & Test Automation
Digital Transformation +
Legacy Modernization Workflow Automation Data-Driven Dashboards CRM / ERP Integration Business Process Re-engineering
AI Services +
AI & Machine Learning AIOps Intelligent Automation Business Intelligence & Analytics AI Installation & Compute
Infrastructure Management +
Cloud Setup Cloud Migration Managed Cloud Services Server & Hosting Cost Optimization Performance Optimization Outsourced Support
DevOps & Automation Services +
CI/CD Setup Kubernetes & Docker Infrastructure as Code Cloud-Native Migration DevSecOps
Cybersecurity & Compliance Services +
Security Hardening VAPT Incident Response Backup & DR

© 2026 Bobcares. All Rights Reserved.

  • Careers
  • |
  • Cookie Policy
  • |
  • GDPR
  • |
  • Privacy Policy
  • |
  • Terms and Service
  • LinkedIn
  • YouTube
  • Instagram
  • Facebook

Preview of the new Bobcares experience
NEW UPDATE
See What’s New
at Bobcares

Discover a faster, clearer view of our services and expertise.


Explore the New Experience
Arrow Right