I would recommend setting up LISTSERV's spam_exit so that most spam is
recognized and trashed before getting a response.

See http://www.lsoft.com/news/techtipLSV-issue2-2005-us.asp


On 30 Nov 2007 at 17:51, listserv postmaster wrote:

> Unfortunately the mail addresses are never repeated.  The spammers just
> send message after message with different forged addresses.  The owners
> of the forged addresses then get some garbled HTML SPAM interspersed
> with LISTSERV "INVALID COMMAND" messages.


--
Francoise Becker

LISTSERV(R) - real software, real results.
See LISTSERV in action:
http://www.lsoft.com/products/listserv_flash_demo.asp