There is another way of defeating spam stuff, particularly where the
return address is bogus-which is the case in many spams-and that is to
add something in ~/.procmailrc that strips the domain name from email,
and does a ping(1), or nslookup(1) to verify that the domain exists,
and if it doesn't, put it in the /dev/null folder. Of course, it
requires a ppp/slip/tcp connection to the Internet. A hack on the
sources to ping or nslookup may be in order to only return an error
code if the domain name does not exist. If I am not mistaken,
sendmail.cf does this, but if it the domain name does not exist, it
delivers it, anyhow.
John
--
John Conover, 631 Lamont Ct., Campbell, CA., 95008, USA.
VOX 408.370.2688, FAX 408.379.9602
john(_at_)johncon(_dot_)com