On Mon, 5 Jun 2000, eric clover wrote:
> ok , ill try to redirect this. i Work at an isp. every
> users at the isp gets spam from: <>. we all get the same
> spam. we get this spam around every 3 weeks.i am
> requesting a way to block someone sending a spam from: <>
> with a return address of: <> from ever getting sent to any
> of our users. procmail seems to rate highly with most
> people, but how does procmail block <> ? thank you eric
>
These are valid headers for "delivery status notifications
(DSNs)". The spammers use them because they know you will
have to accept them per RFC1891, RFC1123 and RFC821. If you
do block them, you will never get a response for mail that
is undeliverable, or other problems that may arrive.
The best way is to filter the mail using one of numerous
packages available on the net.
(Note: the above RFC's are readily available on the web...
just search using your favorite search engine).
--
John Darrah (u05192) | Dept: N/C Programming
Giddens Industries | Ph: (425) 353-0405 #229
PO box 3190 | Ph: (206) 767-4212 #229
Everett WA 98203 | Fx: (206) 764-9639
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