Addressing Spamming Issues on Your VPS Spamming is a common issue that can affect VPS users, often caused by various factors. Here's how to address the problem: Why Is Your Server Sending Spam? The main causes for spamming are: _1. Your VPS was hacked. Your website was hacked. Intentional spam activity. _ If Your VPS Was Hacked Disable Mail Services: If your VPS isn’t used for email, remove or disable mail services like Exim, Postfix, or Sendmail. Block SMTP Ports: Block ports 25, 465, and 587 using iptables or another firewall. Secure SSH: Prevent spam via SSH tunnels by using strong passwords, a custom SSH port, and SSH keys. Keep access restricted to trusted individuals. Keep Software Updated: Regularly update your software, run security checks, and use a firewall to monitor and log security issues. If Your Website Was Hacked Scan for Malware: Use antivirus software to detect and remove malware. Update CMS: Ensure your Content Management System (CMS) is updated to fix known vulnerabilities. Enable automatic updates if possible. Use ModSecurity: Install ModSecurity, a web application firewall, for Apache to block malicious requests and prevent common attacks. Use Strong Passwords: Ensure passwords for your CMS are secure and not shared. Avoid Unknown Plugins: Only use trusted plugins to prevent unauthorized access. Limit Uploads: Restrict file types that can be uploaded to your site. Set Proper Permissions: Avoid permissions like "777" and assign appropriate file and folder permissions. If Your Server Is Reported for Spamming Even if spamming isn’t allowed, legitimate emails from your sites may still be flagged. To improve email trustworthiness: Implement SPF and DKIM Records: Set up these records for your domain to verify your emails. Avoid Spam Keywords: Steer clear of common spam-related terms. You can find a lot of examples here. Send Relevant Content: Ensure emails are for informational purposes and not marketing or newsletters. Final Notes Regularly check mail and server access logs for anomalies. Keep your system and software up-to-date. If blacklisted, investigate and resolve the issue promptly. Remember, spamming is prohibited by our Terms of Service. Review them here .

What to do if your server is used for spamming

Addressing Spamming Issues on Your VPS

Spamming is a common issue that can affect VPS users, often caused by various factors. Here's how to address the problem:

The main causes for spamming are:
_1. Your VPS was hacked.

Disable Mail Services: If your VPS isn’t used for email, remove or disable mail services like Exim, Postfix, or Sendmail.
Block SMTP Ports: Block ports 25, 465, and 587 using iptables or another firewall.
Secure SSH: Prevent spam via SSH tunnels by using strong passwords, a custom SSH port, and SSH keys. Keep access restricted to trusted individuals.
Keep Software Updated: Regularly update your software, run security checks, and use a firewall to monitor and log security issues.

Scan for Malware: Use antivirus software to detect and remove malware.
Update CMS: Ensure your Content Management System (CMS) is updated to fix known vulnerabilities. Enable automatic updates if possible.
Use ModSecurity: Install ModSecurity, a web application firewall, for Apache to block malicious requests and prevent common attacks.
Use Strong Passwords: Ensure passwords for your CMS are secure and not shared.
Avoid Unknown Plugins: Only use trusted plugins to prevent unauthorized access.
Limit Uploads: Restrict file types that can be uploaded to your site.
Set Proper Permissions: Avoid permissions like "777" and assign appropriate file and folder permissions.

Even if spamming isn’t allowed, legitimate emails from your sites may still be flagged. To improve email trustworthiness:

Implement SPF and DKIM Records: Set up these records for your domain to verify your emails.
Avoid Spam Keywords: Steer clear of common spam-related terms. You can find a lot of examples here.
Send Relevant Content: Ensure emails are for informational purposes and not marketing or newsletters.