Email Blocked due to Melissa Virus

From Relyimah

Problem

When sending an email, recipients receive the following message:

REMOVED_BY_THE_EXCHANGE_CONTENT_SCANNING_SERVICE_5CAE6CF4_0000e27c_E 
The original message content contained a virus or was blocked due to blocking rules and has been removed.

The email administrator also gets a message saying that the email was blocked due to the email having the "Melissa Virus".

Cause

Most recently (06/12/2007), this was caused because the email had the phrase "INTEGEN1" in the body of the email. Once this was removed, the email sent through fine.