Exchange 2010 - Transport rules - Move mail sent to distribution list, not members

Hello,

My boss asked me the following request but I have a doubt about it:

Is it possible, on Exchange 2010, to create a transport rule which move a mail to a Public Folder if a specified Subject is present and if the mail is sent to a distribution list (all the group, not only a member).

I've got the action: redirect to an address (mail of the mail-enabled Public Folder). => OK

I've got the condition for the Subject.: when the Subject field contains specific words. ==> OK

But I have a doubt for the fact of the distribution list as recipient.. Indeed, I want the condition to match the whole distribution group and not only a member. So in my case "sent to a member of distribution group" is not good. ==> Not OK

To sum up: is there a way to create a transport rule which match a distribution list (whole members, not only one) as condition?

Regards,