It depends on whether the spammer is removing people who bounced as dead addresses.
On Fri, 21 Dec 2001, Kee Hinckley wrote: > At 1:18 AM -0500 12/21/01, Emmanuel. M. Decarie wrote: > >Hello, > > > >Mail.app have a nice feature to fight spam. It can make false > >"bouncing" message and returned it to the sender. I know that a lot > >of sender addresses are forged, but I think it worth a try. I looked > > I wouldn't call it a lot. I'd call it 99.9%. I really don't think > this is a worthwhile effort. Far better to look at the received > headers and report it to the ISP in question. >
