Upper limit of bad sender list entries - Messaging Gateway

Products

• Messaging Gateway

Issue/Introduction

Customers managing high-volume email environments often ask whether there is a predefined limit for the Local Bad Sender Domain list and how adding large numbers of entries impacts system performance.

Environment

Messaging Gateway 10.8 10.9

Resolution

While there is no hard limit, adding tens of thousands of entries may impact lookup latency.

Administrators should monitor system performance metrics (specifically CPU and memory usage) after large bulk imports and ensure the virtual appliance meets recommended hardware resource requirements.