OL2007 Rule moves non-selected senders to folder

Hi all, I have a simple rule in Outlook 2007 that moves emails from seven
senders to one folder.

Three of the senders have two email addresses each that I have in my
contacts as as three personal d-lists containing both of their email
addresses. I also have a different personal d-list with those three d-lists
plus the single address as members.

Then I created the rule I'm having problems with using all seven individual
addresses (not by d-lists) to move them to one folder upon receipt. This
rule works fine and regardles of what email address the appropriate senders
use they arrive in correct folder.

THE PROBLEM I am having is that, in addtion to the correct senders getting
to the target folder, every other email I recieve whose sender's email
address begins with the letter A is ALSO going to the folder. So I get
emails from the seven plus any sender whose email address begins with the
letter A. None of the appropriate sender's email addresses begin with A and
are in no way connected to any of the letter-A senders.

I have searched all the parameters of the rule and cannot find any typing
error or an incorrectly chose serach perameter that would cause this problem.
I've deleted the rule and rewrote it but all senders with the first letter A
in their address, still incorrctly goes to folder.

I cannot figure out way this is happening so I can stop it...

Thanks!