What can I do about spam with no subject or message body

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Updated:August 12, 2014
Document ID:118247

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Introduction

This document describes how to reduce the impact of spam with empty message bodies.

What can I do about spam with no subject or message body?

While Cisco Anti-Spam creates and publishes rules to combat spam attacks that appear like bounce messages (blank sender), there is a message filter which can help reduce the impact.

blankSpam:
if ((subject == "^$") AND (header("To") == "^$")) AND (body-size < 3072)
{
insert-header("X-Spam", "$FilterName"); quarantine("Policy");
}

Revision History

Revision Publish Date Comments
1.0
12-Aug-2014
Initial Release
TAC Authored

Contributed by Cisco Engineers

  • Stephan Fiebrandt and Chris Haag
    Cisco TAC Engineers.

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