>>> Paul Russell <[log in to unmask]> 12/22/2009 10:01 AM >>>
On 12/22/2009 10:45, Andrew Bosch wrote:
> 
> That is a tricky one. The spam sender could be any one of the editors or subscribers, assuming
> that the spams he gets are not just coincidental. If he has access to the MTA logs, the SMTP 
> transaction information could be revealing.
> 

Almost everything useful that he could find in the MTA log should also be
present in the full message headers on the spam.
>>>>>>>>>>>>>>>>>>>>>>>>

Unless the envelope addresses are different from the To and From addresses.