[Mailman-Users] How to get Sender Id from the Mailing List where the annoymous option is set

Hi, I am the list administrator for a mailing list running mailman 2.1.3 with python. My list is set as anonynmous list. So I cannot find the senders email id. I donot want to change the settings to non annoymous, as this will discourage people from posting to the group. Can anyone tell me how

[Mailman-Users] How to get the sender id when the list is set to annoymous mode

Hi, I am the administrator of one of the mailing list setup using Mailman 2.1.3. The list has the annoymous option set to yes, so that the users will not know the person posting the mail. I would like to know if as a administrator, is there a way i can get the senders email id for the messages