Sendmail: How does one blacklist annoying spammers?

Greg Woods woods at
Fri Jun 25 22:57:54 UTC 2010

On Fri, 2010-06-25 at 15:29 -0700, Daniel B. Thurman wrote:

> Are you talking about something like this from
> FEATURE(`dnsbl', `', `"Rejected due to Open Relay see 
>" $&{clientaddr} " for more 
> information"')dnl

Yes, that is a DNS Block List (DNSBL). So is Spamhaus. There are a lot
of them out there.


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