Also be aware that large companies normally prevent this option to avoid infinite loops
ex.
An employee here had forwarding setup to forward all incoming messages to his yahoo email account. Well, Yahoo sent replies back one day saying their "system was down and would be back up shortly". Well, you can guess that the two exchange servers kept sending email back and forth almost instantaneously until our exchange server went down.
Anyway, sorry to stray off topic a bit, but it does depend on whether the rule is allowed to begin with.
~cdogg
"The secret to creativity is knowing how to hide your sources."
- A. Einstein