To block the MyDoom/Novarg virus you need to use domain processing rules within Imail. This can be updated using your Imail control panel online @ http://mail.yourname.com:8383 (Remember, your username is your email address) Instructions on how to do this are attached below.
1. Select Domain Processing Rules in the Administrative Account Options drop down menu.
2. Select Add
3. Enter the following values:
Field: Body contains
4. Click on Add Condition
5. You can then use the "Insert Or" to add more phrases. In the example above we used name=".*\.exe", this will block all .exe attachments. Click here to see more examples. Here is a list of other attachments that you should block.
6. Select Delete the message
7. Click on Finish