• SonicOS 7.1
• About SonicOS
  • Working with SonicOS
  • SonicOS Workflow
  • How to Use the SonicOS Administration Guides
  • Guide Conventions
• Introduction to Diagnostics for Classic Mode
• Terminal
• Tech Support Report
• Check Network Settings
• DNS Name Lookup
• Network Path
• Ping
• Trace Route
• Real-Time Blacklist
• Reverse Name Lookup
• Connection TopX
• Geo and Botnet
• MX and Banner
• GRID Check
• URL Rating Request
• PMTU Discovery
• Switch Diagnostics
• SonicWall Support
  • About This Document

Real-Time Blacklist

The Real‐Time Blacklist feature allows you to blacklist SMTP IP addresses, RBL services, and DNS servers.

To blacklist an IP address, RBL domain, or a DNS server

1. Navigate to Device > Diagnostics > Real-Time Blacklist.
2. Enter an IP address in the IP address field, a FQDN for the RBL in the RBL Domain field, or DNS server information in the DNS Server field.
3. Click GO.