Are your cPanel, Plesk or DirectAdmin servers email blacklisted? Here's how you can prevent spam block listing of web hosting servers
Spam block listing or IP address blacklisting happens when spam traps detect outbound spam mails from a web hosting server. Spam mails are primarily sent using:
1. Spam scripts uploaded to a hacked web site which has outdated and vulnerable web applications(Wordpress, Joomla, Drupal, etc).
2. Stolen/leaked passwords to email accounts that allow spam mails through email authentication.
3. Un-secured email server that acts as an open email relay. Continue reading